Every week your Google Ads campaign runs without a negative keyword list, you are paying for clicks from people who will never become customers. Job seekers, students, competitors, and researchers are clicking your ads. You’re paying Google for each one. A well-built negative keyword list is one of the most direct ways to lower your cost per lead.
What Negative Keywords Do
Negative keywords prevent your ads from showing for specific search terms. If you run a residential HVAC company in O’Fallon and add “commercial” as a negative keyword, your ads won’t show to people searching for commercial HVAC services. If you add “jobs” and “careers” and “apprenticeship” as negatives, your ads won’t show to people looking for HVAC employment.
Every dollar you stop spending on irrelevant clicks is a dollar that goes to clicks from people who actually want to buy.
The 4 Negative Keyword Categories Every Local Service Business Needs
Category 1 is intent negatives: people who aren’t buyers. Add “DIY,” “how to,” “tutorial,” “course,” “training,” “certification,” “license,” and “school” for almost any service business. These are informational searchers, not buyers.
Category 2 is employment negatives: people looking for jobs. Add “jobs,” “careers,” “hiring,” “salary,” “apprenticeship,” and “entry level.” Any searcher using those words is looking to work in your industry, not hire you.
Category 3 is competitor and brand negatives: add your competitors’ names if you don’t want to pay for searches that include them. Conversely, if a competitor brand is part of your strategy, you might bid on them deliberately, but make that a separate campaign, not an accident.
Category 4 is geography negatives: if your campaign targets O’Fallon MO and you’re getting impressions for O’Fallon IL, add the wrong state or city as a negative. Geography settings are not always precise enough on their own.
How to Build Your Negative Keyword List
Start with a brainstorm: list every reason someone might search for terms related to your business without being a buyer. Do this for 15 minutes with someone who knows your customer base.
Then pull your Search Terms report in Google Ads. Go to Keywords, then Search Terms. You’ll see every query that triggered an impression or click in the last 30 days. Filter for terms that received clicks but generated no conversions. Any irrelevant query in that list is a negative keyword candidate.
Add negatives at the campaign level (blocking from that campaign only) or account level (blocking everywhere). For most small businesses, account-level negatives for your core list and campaign-level negatives for campaign-specific exclusions is the right structure.
The Ongoing Maintenance
Negative keyword management is not a one-time setup. Review your Search Terms report monthly. Add new irrelevant terms as they appear. Your campaign’s efficiency will improve every month as your negative list grows.
Most small business Google Ads accounts we audit have negative keyword lists with fewer than 20 terms. A properly maintained account has 100 to 300 negatives built up over time.
SVG Digital builds and maintains negative keyword lists as standard practice for every Google Ads account we manage. If you’re not sure what’s burning your budget, the Search Terms report tells the story.
