The Negative Keywords Masterclass: How 200+ Exclusions Can 3x Your Conversions

TL;DR: One in four Google Ads accounts has zero negative keywords. Those accounts convert at 4.6%. Accounts with proper negative lists? 13%. That is a 3x gap, and I have seen it play out across dozens of client accounts. If you do one thing after reading this, build a 200+ negative keyword list. It is free, it takes an afternoon, and it will likely be the single highest-ROI afternoon you spend on your ad account this year.

Negative keywords cost nothing to add and take minutes to implement. They can eliminate 23-34% of irrelevant traffic overnight. Yet most advertisers either ignore them or add them one at a time, after the damage is done.

I wrote this guide because I got tired of auditing accounts and finding the same problem over and over: no negative keywords, money pouring into searches that will never convert. Here is the complete framework to fix that proactively.

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Why Negative Keywords Matter: The Numbers

The data here should make every advertiser uncomfortable.

The Waste Without Negative Keywords

Sources: PPC Land (15,000 accounts), GROAS.ai

The Scale of the Problem

• 25% of Google Ads accounts have zero negative keywords (PPC Land)
• 84% of advertisers use fewer than 50 negative keywords (GROAS.ai)
• The average account wastes $1,127.54/month — negative keywords address the largest chunk of that waste (PPC Land)
• Comprehensive negative keyword management generates 400-800% ROI (GROAS.ai)

What Happens Without Negative Keywords

A plumbing company bids on "plumber" with broad match. Here is what their Search Terms Report actually looks like:

Of 8 clicks, only 2 are relevant. That is 75% waste. The business paid $51.30 but only $17.60 had any chance of converting.

With proper negative keywords (salary, meme, how to become, crack, joke, game, job, openings), those 6 irrelevant clicks never happen. The budget goes entirely to real prospects.

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How Negative Keywords Work

The Basics

A negative keyword tells Google: "Do not show my ad when someone searches for this term." Simple as that. When a search query contains your negative keyword, your ad stays hidden.

Positive keyword: plumber near me (show my ad) Negative keyword: -plumber salary (hide my ad)

Negative Keyword Match Types

Negative keywords have their own match type system, and it works differently from positive keyword match types.

Critical Differences from Positive Match Types

Negative broad match does NOT include:

• Close variants
• Synonyms
• Related searches

This means if you add "plumber salary" as a broad match negative, it blocks "plumber salary" and "salary plumber" but does NOT block "plumber wages" or "plumber pay" or "plumber income." You need to add those separately.

Rule of thumb:

• Use broad match negative for obviously irrelevant terms (free, jobs, DIY)
• Use phrase match negative for specific irrelevant phrases (e.g., "how to become")
• Use exact match negative only when you need surgical precision — blocking one query while keeping close variants active

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Building Your 200+ Negative Keyword List

The approach that works best is layered: start with universal exclusions, add industry-specific terms, then refine with data from your search terms report. Each layer builds on the one before it.

Layer 1: Universal Exclusions (50-70 Keywords)

These terms are irrelevant for virtually every service business running Google Ads. Add them before your first ad ever runs. I keep a master template of these and paste them into every new account on day one.

Job & Career Terms (15-20 keywords)

When someone searches "[your service] salary" or "[your service] jobs," they are looking for employment, not hiring you.

job
jobs
career
careers
employment
hiring
recruit
recruiting
salary
salaries
resume
interview
freelance
contractor jobs
apprentice
apprenticeship
intern
internship
certification
training program

DIY & Educational Terms (15-20 keywords)

These searchers want to learn how to do it themselves — the opposite of hiring a professional.

how to
DIY
tutorial
guide
learn
course
training
class
classes
school
university
college
degree
certification exam
study
homework
thesis
research paper
PDF
template

Free & Discount Seekers (10-15 keywords)

These searches rarely lead to paying customers for service businesses.

free
cheap
cheapest
discount
coupon
deal
bargain
giveaway
sample
trial
volunteer
pro bono
charity
donation

Entertainment & Irrelevant (10-15 keywords)

Searches that have nothing to do with hiring a service provider.

meme
memes
funny
joke
jokes
gif
video game
game
movie
show
TV
wiki
Wikipedia
Reddit
forum
definition
meaning

Layer 2: Industry-Specific Exclusions (50-80 keywords)

These vary by your industry. Here are templates for common service verticals.

Home Services (Plumbing, HVAC, Electrical, Cleaning)

plumber school
plumber license
plumber exam
plumber union
plumber apprentice
plumber tools
plumber snake rental
plumber tape
plumbing code
plumbing diagram
plumbing parts
plumbing supplies store
plumbing fixtures wholesale
pipe fitting specifications
water heater manual
HVAC technician school
electrician school
electrician exam
cleaning products
cleaning supplies
cleaning hacks

Legal Services

law school
bar exam
LSAT
paralegal
legal assistant
legal secretary
law degree
how to sue
sue without lawyer
legal forms free
legal templates
legal aid free
pro bono
public defender
court dates
case law
legal research
law review
legal definition
statute of limitations

Healthcare & Dental

medical school
dental school
nursing school
medical degree
dental hygienist salary
dental assistant school
anatomy
symptoms
diagnosis
home remedy
home remedies
natural cure
natural treatment
WebMD
Mayo Clinic
medical journal
clinical trial
research study
insurance coverage
Medicare
Medicaid

Professional Services (Accounting, Consulting, IT)

accounting degree
CPA exam
accounting software free
QuickBooks tutorial
Excel template
bookkeeping course
tax form
tax calculator free
IRS form
self-filing taxes
TurboTax
H&R Block
consulting framework
consulting case study
MBA
business school
IT certification
CompTIA
coding bootcamp

Layer 3: Competitor & Brand Terms (10-20 keywords)

Layer 3 is where most accounts stop, but the real savings happen in Layer 4. Still, competitor exclusions matter. Unless you have a dedicated competitor targeting campaign, exclude competitor names to avoid waste.

[Competitor 1 name]
[Competitor 2 name]
[Competitor 3 name]
[Major brand names in your industry]
[National chain names you cannot compete with]
Amazon
Walmart
Home Depot
Lowes

Note: If competitors are bidding on YOUR brand name, you may want to bid on theirs. But do this in a separate campaign with its own budget — never mixed with your service campaigns.

Layer 4: Geographic Exclusions (10-20 keywords)

This is the layer that separates good accounts from great ones. If you serve a specific area, exclude locations you do not service. I have seen accounts waste hundreds of dollars a month on clicks from cities they cannot even reach.

[Cities you don't serve]
[States you don't serve]
international
worldwide
overseas
remote
online only
virtual
shipping
delivery
mail order

Layer 5: Data-Driven Additions (Ongoing)

This layer grows over time as you review your Search Terms Report. Every week, you will find new irrelevant queries to add. This is where the list goes from 200 to 300, 400, and beyond.

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N-Gram Analysis: The Advanced Method for Finding Negatives

N-gram analysis breaks your search queries into 1-4 word phrases to surface patterns you would miss reviewing individual queries. This is where things get interesting.

What is N-Gram Analysis?

Instead of slogging through each search term one by one, n-gram analysis extracts common word patterns across all your queries and measures their aggregate performance.

Example: If you have 500 search terms, n-gram analysis might reveal:

Without n-gram analysis, you would need to review all 500 terms individually. With it, you quickly identify that "salary," "school," and "how" are systematic waste patterns across dozens of queries.

How to Run an N-Gram Analysis

Step 1: Export your Search Terms Report (last 90 days minimum)

Step 2: Use a spreadsheet or script to break each query into individual words (1-grams) and word pairs (2-grams)

Step 3: Sum the impressions, clicks, cost, and conversions for each n-gram across all queries containing it

Step 4: Sort by cost (highest first) and identify n-grams with high spend and zero or near-zero conversions

Step 5: Add wasteful n-grams as negative keywords

Frequency:

• High-volume accounts ($5,000+/month): Run monthly
• Standard accounts: Run quarterly
• New accounts: Run after first 30 days, then quarterly

As Michelle Morgan (Co-Founder of Paid Media Pros) explains: "An N-Gram analysis allows you to see how individual words or short phrases perform in your search queries without having to review multiple different lines of data."

Worked Example: N-Gram Analysis for a Dental Practice

Let me walk through an actual n-gram analysis so you can see the decision-making process, not just the theory.

The account: A dental practice spending $2,800/month on Google Ads. Three campaigns: general dentistry, cosmetic dentistry, and emergency dental. Running for 6 months with 1,847 unique search terms over the prior 90 days.

Step 1: Export and break down. I exported 90 days of search terms and ran a 1-gram extraction (every individual word across all 1,847 queries, with aggregated performance data).

Step 2: Sort by cost and look for waste patterns.

Here is a portion of the 1-gram results, sorted by cost:

Step 3: Dig into the 2-grams for nuance.

The 1-gram "whitening" looked borderline at $103 CPA. The 2-gram breakdown revealed the problem:

"Teeth whitening" converts because the practice offers professional whitening. "Whitening kit" and "whitening strips" are product shoppers. Without the 2-gram breakdown, I might have killed the entire "whitening" term and lost a converting service line.

Step 4: Calculate the savings.

From this single quarterly n-gram analysis:

• Identified 6 broad match negatives: insurance, school, salary, free, assistant, hygienist
• Identified 2 phrase match negatives: "whitening kit," "whitening strips"
• Total quarterly spend on these terms: $1,105
• Projected quarterly savings: ~$1,000 (some of the "insurance" traffic had 1 conversion, so partial savings)
• Annualized savings: ~$4,000 — on a $33,600/year account, that is a 12% budget recovery

That is the power of n-gram analysis. Eight negatives, identified in under an hour, saving $4,000 per year. And this was a relatively clean account. Accounts that have never been audited often show 20-30% recoverable waste from a single n-gram pass.

Using Google Ads Scripts for N-Gram Analysis

For accounts spending over $5,000/month, automated n-gram scripts save hours of manual work. Available scripts (like those at ads-scripts.com) can:

• Automatically extract search query data
• Break queries into n-grams
• Calculate performance metrics per n-gram
• Flag potential negative keywords
• Export results to Google Sheets

PPC specialists run an average of 3.8 scripts per account, and 63% of active advertisers use 1-5 scripts (industry survey).

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Negative Keyword Match Type Strategy

Match type selection for negatives is just as important as the terms themselves. Get this wrong and you will either over-block good traffic or leave gaps that waste money.

When to Use Each Type

Common Match Type Mistakes

Mistake 1: Using only broad match negatives

If you add "free" as a broad match negative and someone searches "toll-free plumber number," your ad is blocked — even though "toll-free" is relevant. In this case, use phrase match: "free plumber" or exact match: [free plumber].

Mistake 2: Forgetting that negative broad match does NOT include synonyms

Adding "cheap" as a negative does NOT block "inexpensive," "budget," or "low-cost." You need to add each separately.

Mistake 3: Over-blocking with broad negatives

Adding "water" as a broad negative for an HVAC company might seem smart (you do not do plumbing). But it also blocks "water heater" searches — which HVAC companies often service. Use phrase match: "water damage" instead.

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Shared Negative Keyword Lists

Google Ads lets you create shared negative keyword lists that apply across multiple campaigns. If you manage more than two campaigns, this is essential.

Why Use Shared Lists

• Consistency: Every campaign automatically gets the same exclusions
• Efficiency: Add a negative once, it applies everywhere
• Maintenance: Update one list instead of editing each campaign individually
• Organization: Group negatives by category for easy management

Recommended Shared List Structure

How to Create Shared Lists

1. Go to Tools & Settings > Shared Library > Negative Keyword Lists
2. Click the + button to create a new list
3. Name the list (e.g., "Universal Negatives")
4. Add your keywords with appropriate match types
5. Click Save
6. Apply the list to campaigns: select campaigns > Settings > Negative Keywords > Use Negative Keyword List

Performance Max Update (2025-2026)

As of January 2025, Performance Max campaigns now support:

• Campaign-level negative keywords (up to 10,000 per campaign)
• Shared negative keyword lists

This is a significant improvement. Previously, PMax had no negative keyword capability, contributing to its reputation for wasted spend on irrelevant queries.

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The Negative Keyword Maintenance Routine

Building the initial list is step one. The ongoing discipline of maintaining and expanding it is what separates accounts that stay efficient from accounts that slowly bleed money.

Weekly Routine (15-20 minutes)

Every week, perform this check:

1. Open Search Terms Report (Campaigns > Insights & Reports > Search Terms)
2. Sort by cost (highest first)
3. Scan for irrelevant queries — anything that is clearly not a potential customer
4. Add irrelevant queries as negatives with appropriate match type
5. Look for patterns — if you see multiple queries with "salary," add "salary" as a broad negative rather than blocking each query individually
6. Check the "Other Search Terms" row — this represents queries Google withholds. If the aggregate metrics are poor, your targeting may be too broad.

Monthly Routine (30-45 minutes)

In addition to the weekly check:

1. Run performance review by negative keyword list — are your shared lists catching the intended traffic?
2. Review keywords with zero conversions in the past 30 days — should any become negatives?
3. Check for over-blocking — has any negative keyword inadvertently blocked a relevant query? (Check impression share for clues)
4. Add seasonal negatives — holiday terms, back-to-school, event-specific terms that may trigger irrelevant matches

Quarterly Routine (1-2 hours)

1. Run full N-Gram analysis on the past 90 days of search terms
2. Audit shared lists — remove any negatives that may now be relevant (business expanded services, added new locations)
3. Benchmark conversion rates — compare periods before and after negative keyword additions
4. Industry review — check if new irrelevant search trends have emerged in your industry

The 10% Rule

Jyll Saskin Gales (former Google employee) offers this benchmark: "If you need to add 10% or more of your search terms as negatives, that is a red flag."

If your negative keyword additions consistently exceed 10% of total search terms, the problem is not just missing negatives — your underlying keyword targeting is too broad. Consider:

• Switching from broad match to phrase or exact match
• Restructuring ad groups around tighter themes
• Reducing the number of keywords per ad group

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Industry-Specific Negative Keyword Templates

These are not generic suggestions. Each list below comes from real Search Terms Reports across dozens of accounts in each industry. Copy them directly into your shared negative keyword lists and customize from there. I have organized them by the type of waste they prevent so you can see the reasoning, not just the keywords.

Plumbing (85+ Negatives)

Jobs & Education (block career seekers): plumber salary, plumber school, plumber license, plumber apprentice, plumber certification, plumber union, plumber exam, become a plumber, plumbing degree, plumbing course, plumbing training, plumber wages, plumber income, plumber job description, journeyman plumber, master plumber exam, plumber helper, plumber resume, plumber interview questions

DIY & Supplies (block people doing it themselves): plumbing parts, plumbing supplies, plumbing tools, plumber snake, plumber tape, pipe wrench, pipe cutter, PVC pipe, copper pipe, plumbing diagram, plumbing code, how to fix, how to install, how to unclog, DIY plumbing, plumbing fittings, toilet repair parts, faucet replacement parts, plumbing sealant, shark bite fittings, soldering copper pipe, how to sweat pipe, drain snake rental

Irrelevant / Entertainment (block pure noise): plumber crack, plumber meme, plumber game, plumber costume, plumber movie, Mario plumber, plumber van, plumber truck, plumber logo, plumber t-shirt, plumber jokes, plumber cartoon, plumber emoji, plumber Halloween

Generic / Low-Intent (block researchers, not buyers): free plumber, cheap plumber, plumber Wikipedia, plumber definition, what is a plumber, types of plumbers, plumber vs handyman, plumbing history, average plumbing cost nationwide, plumbing industry statistics

Competitor & Retail (block people shopping for products, not services): Home Depot plumbing, Lowes plumbing, Amazon plumbing, plumbing supplies store, plumbing warehouse, wholesale plumbing, Ferguson plumbing, plumbing catalog

HVAC (80+ Negatives)

Jobs & Education: HVAC salary, HVAC school, HVAC certification, HVAC technician training, HVAC apprentice, HVAC license, HVAC exam, become HVAC technician, HVAC degree, HVAC course, HVAC trade school, EPA 608 certification, HVAC helper, HVAC journeyman, HVAC resume, HVAC career path, HVAC union

DIY & Supplies (these searchers will not hire you): HVAC parts, HVAC filter, air filter, furnace filter, thermostat installation, HVAC ductwork, refrigerant, HVAC tools, HVAC manual, HVAC diagram, how to fix AC, DIY HVAC, AC capacitor, blower motor, evaporator coil, condenser fan motor, HVAC relay, furnace ignitor, how to recharge AC, R-410A, R-22, freon, HVAC filter size, MERV rating, how to change furnace filter

Irrelevant / Informational: HVAC meaning, HVAC definition, HVAC Wikipedia, what is HVAC, HVAC system types, HVAC design software, HVAC drawing, HVAC engineering, HVAC load calculation, HVAC blueprint, HVAC sizing chart, BTU calculator, SEER rating explained, tonnage calculator, HVAC for dummies

Brand / Retail (block people shopping for equipment, not service): Carrier AC unit, Trane AC unit, Lennox furnace, Goodman AC, Rheem AC, buy AC unit, AC unit price, window AC unit, portable AC, mini split DIY, Amazon AC, Home Depot AC, Lowes furnace

Legal Services (75+ Negatives)

Education (block law students): law school, LSAT, bar exam, legal studies, paralegal course, law degree, legal internship, law clerk, law review, legal research, case study, law school ranking, law school admissions, law school personal statement, legal writing course, moot court

DIY & Free (block people who will not pay for a lawyer): free legal advice, legal aid, pro bono, public defender, represent yourself, self-representation, legal forms free, legal templates, legal documents free, court forms, free consultation meaning, legal aid society, how to file a lawsuit yourself, small claims court forms, how to write a demand letter, do I need a lawyer, can I sue without a lawyer

Irrelevant / Entertainment: legal definition, legal meaning, law wiki, famous lawyers, lawyer jokes, lawyer memes, lawyer movies, lawyer shows, law firm rankings, Am Law 100, lawyer salary, lawyer income, how much do lawyers make, lawyer vs attorney, legal drama, law and order, better call saul

Government & Regulatory (block compliance searchers, not clients): statute of limitations lookup, legal code, penal code, civil code, municipal code, court docket, case search, court records free, background check, court calendar, public records, legal notice

Insurance & Claims (block if you are not a PI or insurance firm): insurance claim, insurance adjuster, insurance dispute, file a claim, claim denied, insurance bad faith, diminished value claim

Dental (75+ Negatives)

Education (block dental students and career searchers): dental school, dental hygienist, dental assistant, dental technician, dentistry degree, dental board exam, dental residency, dental training, dental hygienist salary, dental assistant salary, dental school ranking, dental school requirements, DAT exam, dental anatomy, dental laboratory, dental hygienist school, dental assistant certification

DIY & Products (block people buying OTC products): dental products, teeth whitening kit, toothbrush, toothpaste, dental floss, mouthwash, dental wax, dental cement, home teeth whitening, DIY dental, whitening strips, whitening pen, electric toothbrush, water flosser, night guard Amazon, temporary filling, dental adhesive, denture cream, orthodontic wax, teeth whitening at home, charcoal toothpaste, baking soda teeth

Insurance & Cost Comparison (block if you are not marketing insurance-based plans): dental insurance, dental plan, dental coverage, Medicare dental, Medicaid dental, dental discount plan, dental insurance cost, best dental insurance, dental HMO, dental PPO, delta dental login, dental insurance no waiting period

Irrelevant / Informational: dental anatomy, dental chart, dental x-ray reading, dental jokes, dental phobia, dental anxiety, dental malpractice, dental board complaints, how many teeth, wisdom teeth meme, tooth fairy

Auto Repair (80+ Negatives)

Jobs & Education: mechanic salary, mechanic school, ASE certification, automotive technician training, mechanic apprentice, mechanic resume, mechanic job, auto body school, diesel mechanic school, mechanic tools, mechanic tool set, become a mechanic, auto repair course, automotive degree, mechanic career

DIY & Parts (block shade-tree mechanics): auto parts, car parts, OEM parts, aftermarket parts, junkyard, pull-a-part, how to fix, how to replace, DIY car repair, YouTube car repair, brake pads replacement, oil change DIY, spark plug replacement, how to change oil, how to rotate tires, repair manual, Haynes manual, Chilton manual, torque specs, wiring diagram

Retail & Online Shopping: AutoZone, O'Reilly, NAPA, Advance Auto Parts, RockAuto, Amazon car parts, eBay car parts, CarParts.com, wholesale auto parts, discount auto parts

Irrelevant / Entertainment: car memes, car games, car movies, Fast and Furious, car show, car meet, car auction, Barrett Jackson, car museum, concept car, car review, car comparison, car ranking, best cars, worst cars, car recall, car history

Low-Intent / Generic: car repair cost estimator, average repair cost, is it worth fixing, repair vs replace, how much does it cost to fix, car repair scam, mechanic rip off, cheap mechanic, free car repair, car repair charity

Specific Services You May Not Offer (customize this): body shop, collision repair, paint job, car wrap, window tinting, car detailing, car wash, stereo installation, lift kit, lowering kit, performance tuning, dyno, custom exhaust

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The Quarterly Review Process: Keeping Your Negative List Sharp

A negative keyword list is not a set-it-and-forget-it asset. Businesses change, search behavior shifts, and Google's broad match algorithm evolves every quarter. Without a structured review process, your list either grows stale or becomes counterproductive. Here is the exact quarterly review process I run for every account I manage.

Quarter Start: Pull Your Baseline Data

Before you change anything, snapshot your current state. You need these numbers to measure whether your negative keyword strategy is actually working.

1. Export Search Terms Report for the full prior quarter (90 days)
2. Record baseline metrics:
   • Total search terms triggered
   • Percentage flagged as irrelevant (manually review a sample of 200+ terms)
   • Conversion rate on non-negated traffic
   • Total spend on queries that matched negative keywords (this should be near zero if your lists are working)
   • Average CPA across all campaigns
3. Export your full negative keyword list from all shared lists and campaign-level negatives — save this as a versioned backup (e.g., "Negatives_Q1_2026.csv")

Step 1: Audit for Over-Blocking (30 minutes)

Over-blocking is the silent killer. You added "water" as a broad negative six months ago and forgot that your HVAC company now services water heaters. This step catches those mistakes.

Process:

1. Run an impression share report segmented by keyword
2. Look for keywords with sudden impression share drops that do not correspond to bid changes or budget changes
3. Cross-reference your negative list against your current service offerings — has anything changed?
4. Search for your own keywords in Google's Ad Preview tool to verify your ads are appearing for the queries you want

Common over-blocking patterns I find in audits:

• Service expansion that conflicts with existing negatives (added "installation" as negative, now offering installation services)
• Geographic expansion blocked by location negatives
• Broad negatives catching long-tail variations ("free" blocking "toll-free number" or "free estimate" — which is actually a high-intent term for many service businesses)
• Seasonal services blocked by year-round negatives

Step 2: Run Full N-Gram Analysis on 90-Day Data (45 minutes)

This is the deep analysis that surfaces patterns hidden in individual search term reviews. See the N-Gram Analysis section above for the full methodology. At the quarterly level, you are looking for:

• New waste patterns that emerged this quarter (trending irrelevant searches)
• Shifting intent signals — terms that used to convert but stopped (may indicate a market change, not a negative keyword issue)
• High-cost, low-conversion n-grams that slipped through your weekly reviews

Step 3: Review and Update Industry-Specific Lists (20 minutes)

Industries evolve. New tools, new trends, new terminology. Each quarter, ask:

• Are there new DIY tools or products in your industry that generate irrelevant searches? (e.g., a new "smart toilet" product launch generates searches a plumber should not pay for)
• Have new competitors entered your market whose brand names you should exclude?
• Are there trending topics or news events generating irrelevant queries? (e.g., a plumbing disaster in the news generates informational searches)
• Has Google's broad match algorithm started matching you to new query categories?

Step 4: Benchmark and Document (15 minutes)

Compare this quarter's metrics against last quarter's:

Document your changes and the reasoning behind them. Six months from now, you will not remember why you added a specific negative, and you may need to undo it. A simple changelog ("Q1 2026: Added 34 negatives, removed 3 over-blocks, CPA improved 8%") takes two minutes and saves hours later.

The Quarterly Review Calendar

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Measuring the Impact of Negative Keywords

After implementing your negative keyword strategy, track these metrics to measure success.

Before/After Comparison Table

Create this comparison 30 days after implementing your negative keyword list:

Expected Improvements by Implementation Level

Source: Aggregated from GROAS.ai, PPC Land, Store Growers

Quality Score Impact

Negative keywords improve Quality Score indirectly by:

1. Increasing CTR — Only relevant searchers see your ad, so a higher percentage click
2. Improving ad relevance — Your ad matches the actual search intent better
3. Better landing page experience — Visitors arrive with matching expectations

Quality Score improvements from negative keywords can reduce CPC by 15-25% and improve ad position by 0.8-1.3 positions (GROAS.ai).

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Advanced Strategies

Strategy 1: Negative Keyword Discovery from Competitors

Use tools like SpyFu or Semrush to see what keywords competitors bid on. If they bid on terms irrelevant to your business, add those as negatives proactively — before you accidentally match to them.

Strategy 2: Seasonal Negative Keywords

Some irrelevant queries spike during certain times:

Add these to a "Seasonal Negatives" shared list and activate/deactivate as needed.

Strategy 3: Cross-Campaign Negatives for Intent Separation

If you run multiple campaigns targeting different intent levels, use negatives to prevent overlap:

This ensures each query triggers the right campaign with the right bid and ad copy.

Strategy 4: Mining Your CRM for Negative Ideas

Look at your CRM data for leads that never converted to customers. Common reasons:

• They wanted a service you do not offer — add that service as a negative
• They were outside your service area — add that location as a negative
• They were looking for a price point below your minimum — add discount/cheap terms
• They were a student or researcher — add educational terms

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Common Mistakes to Avoid

Mistake 1: Reactive Instead of Proactive

Most advertisers add negatives only after seeing waste in their Search Terms Report. By then, the money is already spent. The Layer 1-4 approach above blocks the majority of waste before a single dollar is wasted.

Mistake 2: Adding Negatives Too Aggressively

Be careful not to block queries that seem irrelevant but actually convert. The term "cheap plumber" might seem like a low-quality searcher, but in some markets, price-sensitive customers are high-converting leads.

Rule: If a query has generated even one conversion, think twice before adding it as a negative. Check the downstream value in your CRM first.

Mistake 3: Never Reviewing the Negative List

Your business changes. You add new services, expand to new areas, change pricing models. Review your negative keyword lists quarterly to ensure you are not blocking queries that are now relevant.

Mistake 4: Using Only Exact Match Negatives

Exact match negatives block one query. Broad match negatives block patterns. If someone searches "plumber salary in Chicago" today, they will search "plumber salary in Dallas" tomorrow. A broad match negative on "salary" blocks both (and every future variation).

Mistake 5: Ignoring the "Other Search Terms" Category

At the bottom of your Search Terms Report, Google aggregates queries it does not show individually (cited as privacy reasons). This "Other Search Terms" row often represents 20-40% of your total queries and tends to have 52% higher CPC and 44% lower CTR than visible terms.

If this category shows poor performance, it is a signal that your targeting is too broad. Tighten your match types and expand your negative keyword list. For a deep dive into this hidden waste, see Search Terms Report Mastery.

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The Complete Negative Keyword Checklist

Before Launch

• Add 50-70 universal negative keywords (jobs, DIY, free, entertainment)
• Add 50-80 industry-specific negative keywords
• Add competitor brand names (unless running competitor campaigns)
• Add geographic exclusions for areas you do not serve
• Set up shared negative keyword lists and apply to all campaigns
• Use appropriate match types (broad for concepts, phrase for specific phrases)

Weekly (15-20 minutes)

• Review Search Terms Report sorted by cost
• Add new irrelevant queries as negatives
• Look for patterns (recurring words/phrases) — add at the n-gram level
• Check "Other Search Terms" row performance

Monthly (30-45 minutes)

• Review zero-conversion keywords — should any become negatives?
• Check for over-blocking (impression share drops)
• Add seasonal negatives if applicable
• Review shared list coverage across campaigns

Quarterly (1-2 hours)

• Run full N-Gram analysis on 90 days of search terms
• Audit shared lists for outdated exclusions
• Benchmark conversion rate improvement since last quarter
• Update industry-specific negatives for new search trends
• Review CRM data for patterns in non-converting leads

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Bottom Line

The Numbers

• 25% of accounts have zero negative keywords
• 4.6% conversion rate without negatives vs 13% with negatives (3x difference)
• 23-34% of traffic is irrelevant without negative keywords
• 67% lower CPA with 200+ negative keyword strategies
• 84% of advertisers use fewer than 50 negatives
• 400-800% ROI from comprehensive negative keyword management
• $8,400-$23,700 monthly savings for medium-sized businesses

The Framework

1. Layer 1: Universal negatives (50-70 keywords) — add before launching
2. Layer 2: Industry-specific negatives (50-80 keywords) — add before launching
3. Layer 3: Competitor and brand exclusions (10-20 keywords)
4. Layer 4: Geographic exclusions (10-20 keywords)
5. Layer 5: Data-driven additions (ongoing from Search Terms Report)

The Rules

1. Proactive beats reactive. Build your list before spending, not after.
2. Use shared lists. Apply universally, maintain centrally.
3. Match types matter. Broad for concepts, phrase for specific phrases, exact for surgical precision.
4. Maintain weekly. 15-20 minutes per week prevents thousands in waste.
5. Never over-block. Check for conversion data before excluding any query that might be relevant.

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Next Steps

1. Build your initial 200+ negative keyword list using the templates above
2. Create shared negative keyword lists in your Google Ads account
3. Apply lists to all campaigns (including Performance Max)
4. Set a weekly calendar reminder for Search Terms Report review
5. Run your first N-Gram analysis after 30 days of data

To understand why intent-based targeting matters in the first place, read Demand Capture vs Demand Generation. For the weekly audit process that feeds your negative keyword list, see Search Terms Report Mastery. And for the full checklist of Google Ads settings that quietly drain your budget, see Google Ads Default Settings That Waste Money.