How to find wasted Google Ads spend (without switching off your best customers)

Almost every Google Ads account has a slow leak. Not a dramatic one, nobody notices £40 a week the way they notice a broken checkout, but over a year it adds up to more than most small businesses spend on anything else in their marketing. The awkward part is that the leak and your best customers arrive through the same pipe.

This is a walkthrough of how to find that money properly: what to look at, in what order, and where people usually go wrong and end up switching off the searches that were actually paying for everything.

Start with the search terms report, not the keywords

Your keywords are what you asked Google for. The search terms report is what people actually typed. With broad and phrase match doing most of the work in modern accounts, the gap between the two is where the money goes.

Open the search terms report and set a window long enough to mean something. A week of data on a small account is noise. Thirty days is usually the minimum, ninety is better if your spend is modest, and if you sell something people research for weeks, go longer still.

Sort by cost, not by clicks

Clicks tell you what is popular. Cost tells you what is expensive. Sort descending by cost and look at the top of the list first, the top twenty searches usually account for a large share of the total, and fixing those moves the needle far faster than tidying up the long tail.

Sort every search into one of four piles

This is the bit that matters. A search that has spent money without converting is not automatically waste. Put each one in a pile:

• Earning, it has converted, or it sits inside a campaign that clearly converts. Leave it completely alone.
• Worth owning, it reads like a real customer looking for exactly what you sell, but it is coming in loosely rather than through a keyword of its own. Add it as an exact match keyword so you control the bid.
• Off-brief, the words make it obvious this person will never buy from you: another trade, another city you don't serve, free, DIY, jobs, courses, a competitor's brand you can't service.
• Too early to say, a handful of clicks, no conversions, but nothing about the wording says the wrong person. Watch it. Don't touch it yet.

Cut the off-brief pile with exact match negatives

When you add a negative keyword, the match type is not a detail. A phrase match negative blocks every search containing that wording, and it is very easy to block far more than you meant to.

A window cleaner adding the phrase negative "cleaning" to stop searches for carpet cleaning also blocks "window cleaning near me", the single most valuable search in the account. That is not a hypothetical; it is the most common self-inflicted wound in small accounts.

Add negatives as exact match unless you are completely certain about the wider pattern, and add them at campaign level so you can see later which campaign was affected.

Then look one level up: campaigns and budgets

Once you have handled searches, ask the bigger question. If one campaign has most of the off-brief spend and another is capped by its daily budget while producing the conversions, you don't have a keyword problem, you have a budget problem.

Move money in small steps. Reduce the weaker campaign by no more than about 20% at a time, and put the freed budget into the campaign that is being limited. Big swings reset how Google's bidding behaves and you spend the next fortnight paying for it to relearn.

Do it on a rhythm, not in a panic

The accounts that improve steadily are not the ones that get a five-hour overhaul twice a year. They're the ones where somebody makes a handful of considered changes every week and can tell you afterwards what each change did.

1. 1Weekly: read the search terms report, add exact negatives for anything obviously off-brief, promote anything obviously worth owning.
2. 2Fortnightly: check which campaigns are limited by budget and which are spending without converting.
3. 3Monthly: look back at what you changed and whether the numbers moved. If you can't tell, you changed too many things at once.

How AdKing does this part for you

AdKing reviews connected accounts every night and does exactly this sorting, including working out whether a search describes something you actually sell, so a window cleaner never gets told to block the word cleaning. It puts the ten most valuable changes in front of you each day with the money attached, and nothing reaches Google until you approve it. Every change can be undone, and the result of each one is measured afterwards.