You're paying for searches you never meant to buy

Open your Google Ads account and go straight to the search terms report. Not the dashboard, not the campaign settings, do not pass Go, do not collect $200. The raw list of what people actually typed before your ad showed up. That’s where the money leaks, and most people running the account are looking everywhere except the one report that shows it.

This got worse as the platforms got smarter. Broad match came back, Smart Bidding took over, and Performance Max started spreading spend across every channel it can reach. All that automation is very good at one thing, finding conversions it can get. It isn’t trying to find the customers you want. So it reaches wider, matches your ads to phrases that are close enough, and books whatever converts. Some of that is real demand. A lot of it isn’t.

Here’s the useful part. You can find the waste yourself in about an hour, with a report that’s already sitting in your account. Here’s how I do it.

Pull the report, and actually read it

In Google Ads, open the search terms report and pull the last ninety days. You’ll find it under Campaigns, then Insights and reports, then Search terms. Ninety days gives you enough to see patterns without drowning in noise. Sort by cost, highest first, so the money leads.

Then read it. Term by term, top to bottom, at least across the top slice of spend. This is the step people skip, and it’s the one that pays. Your blended cost per conversion won’t show you any of what you’re about to find.

One caveat. You won’t see every term. Google hides low-volume searches for privacy and buckets them into a row called “other search terms,” so a slice of your spend has no detail behind it. Read what you can, and keep an eye on that bucket’s totals too.

Sort every term into three piles

Real demand. The searches you want, whether or not they converted this month. Someone typing your category, your problem, your product. Keep these, and flag the big ones that deserve their own tighter treatment later.

Clearly irrelevant. Wrong product, wrong intent, wrong person. “Free,” “jobs,” “how to do it yourself,” a competitor you don’t actually compete with, a use case you don’t serve. This is the easy pile, and it becomes negative keywords. Do one check before you add them. Filter your last ninety days for terms that contain the word you’re about to block and confirm none of them converted. A good search can hide behind a word that looks like junk, and blocking it cuts demand along with the waste. Keep a standing negative list, but add to it carefully, not in bulk.

The expensive middle. This is the pile that matters, and the one almost everyone skips. These terms look right. They’re on topic, they sometimes convert, and they bring in the wrong buyer or the wrong deal. The lead that never qualifies. The trial that never activates. The customer who costs more to serve than they’re worth. The machine loves them because they produce a conversion. Your sales team hates them.

Say you sell scheduling software for big teams. “Free calendar app” is the easy no. The one that costs you is “meeting scheduler for small business.” It converts, it brings in solo users on your cheapest plan who churn in a month, and every one of those conversions teaches the machine to go find more of them. That’s the expensive middle. It looks like a win in the account and a loss in the bank.

How to tell the good conversions from the bad

You can’t see this pile in Google Ads alone, because inside the platform these terms look like wins. You see it by tying the terms back to what happened after the click. Match your converting search terms against your CRM or your real sales, and look for the ones that produce conversions but not customers. High form fills, low qualified rate. Plenty of trials, few that stick.

No clean CRM data yet? Use the shortcut. Your sales team already knows which leads are junk, and they can usually name the pattern. Ask them, then go find the terms that match.

What to actually do about it

The irrelevant pile is simple. Add the negatives and move on.

The expensive middle takes judgment, and you’ve got three real levers.

Change what you’re optimizing for. Most accounts tell the platform to chase a raw form fill, so it goes and finds the cheapest one. Point it at a deeper event instead, a qualified lead or actual revenue fed back from your CRM (Google calls it offline conversion import). Once junk stops counting as a win, the machine stops chasing it on its own. Give it a few weeks though. It needs a full data cycle on the new goal before the change shows up in results.

Qualify before the conversion. If a term is half good, a landing page that asks a harder question, states the price, or names the buyer will let the wrong people bounce before they cost you a lead.

Cut what’s clearly wrong. Some of the middle is just waste wearing a conversion. Negative it.

One warning, because it’s the mistake people make right after reading a post like this. Don’t over-prune, and this matters more than it used to. Smart Bidding now treats your negatives as training signal, not just a wall, so a thousand of them narrows what the machine is allowed to explore and slows its learning. In 2026 the bigger risk isn’t too few negatives, it’s too many. Carve the account down to your ten most obvious keywords and you starve it of the signal it runs on, and performance drops. Cut the clearly wrong, keep the range, and let it optimize inside better boundaries.

Do this first

If you run paid search and you haven’t read your own search terms in the last month, that’s the highest-return hour you’ll spend this quarter. Pull ninety days, sort by cost, and clear out the irrelevant pile before you touch anything else. You’ll usually find money the same afternoon.

Frequently asked questions

Do negative keywords still matter with Smart Bidding and Performance Max? Yes, but they work differently now. Smart Bidding treats your negatives as a learning signal, not just a hard block, so they still shape where your budget goes. The catch is that adding too many can starve the system of the range it needs, so add them deliberately rather than in bulk.

How often should I check my search terms? At least monthly, and more often if you lean on broad match or Performance Max. Treat it as a standing habit, not a one-time cleanup, because automated matching keeps finding new terms to spend on.

Can you see the search terms Performance Max spends on? Yes. Since March 2025, Performance Max search terms show up in the standard search terms report, and you can add negatives from there. As with any campaign, you won’t see the low-volume terms Google hides for privacy.

My ad spend looks fine but my leads are low quality. Where do I start? That’s usually the expensive middle, terms that convert but bring the wrong buyer. Match your converting search terms against your CRM to find the ones that produce conversions but not customers, then change what you optimize for so the platform stops chasing them.