Open the search-terms report of any unmanaged Google Ads account and you’ll find the leak: real dollars spent on "free," "DIY," "jobs," "training," competitor names you’d never convert, and cities you don’t serve. Google’s matching has grown aggressively loose — broad match is the default and "close variants" stretch even exact match — so the auction happily sells you searches you’d never approve. Negative keywords are the veto, and they’re the highest-leverage 20 minutes in paid search.
The starter list every Houston local business needs
Before your first click, negative these categories: DIY intent (how to, yourself, tutorial, video), job seekers (jobs, hiring, salary, careers), freeloaders (free, cheap-est variants if you’re not competing there), research-only (what is, definition, license requirements), wrong geography (San Antonio, Dallas, Katy if you don’t go west), and wrong customer (rental, apartment for most trades; renters don’t hire plumbers). Industry-specific lists go deeper — roofing adds "tarp rental" and "insurance adjuster jobs"; auto repair adds "parts," "salvage," "how to replace."
The weekly ritual
Twenty minutes, every week, forever: open the search-terms report, sort by spend, and read what you actually paid for. Anything irrelevant becomes a negative (phrase match for phrases, exact for specific junk). Anything surprising-but-good becomes a new keyword. Accounts that run this ritual trim a meaningful slice of waste monthly; accounts that don’t quietly refund Google 15–30% of budget as matching drifts. The report never stops producing surprises — Google keeps loosening, you keep vetoing.
Negative lists are portable assets
Build shared negative lists (universal junk, geography, industry-specific) and apply them account-wide. New campaigns launch pre-armored instead of re-learning the same expensive lessons — one of those unglamorous practices that separates managed accounts from monitored ones.
The compounding effect
Every vetoed junk search concentrates budget on real intent, which improves click-through on what remains, which raises Quality Scores, which lowers your actual CPCs. Discipline literally buys discounts — the quiet engine behind what a booked job should cost.
Want us to read your search-terms report and total what the leak costs? Ask our AI or email hello@mediajunkie.io — it’s the fastest audit in marketing, and usually the most persuasive.