Guides · Audit methodology
Search Term Waste: Finding Queries That Never Convert
The single largest weight in the AdStake Assurance Standard™ — 25% of every score.
The problem
Broad and phrase match keywords pull in a wide net of related search queries — some highly relevant, some tangentially related at best. Over time, a meaningful share of spend accumulates against queries that sound related to your keyword but never actually convert, because the searcher's intent didn't match what you're selling.
Why it happens
Google's matching algorithm has gotten broader over the years, and 'close variant' matching now includes queries a strict reading of the match type wouldn't have triggered a few years ago. Without active negative keyword maintenance, this drift compounds — the account keeps spending against an increasingly loose interpretation of what the keyword was supposed to mean.
How to detect it manually
Pull the search terms report, sort by cost, and scan top-to-bottom for queries with spend but zero conversions. Add clear non-converters as negative keywords. This is effective but needs to be repeated regularly — new waste accumulates continuously as matching evolves and new queries enter the auction.
How AdStake automates it
AdStake's waste detection module scans your uploaded search terms report for non-converting spend automatically, ranking findings by dollar impact so you know which negative keywords to add first for the biggest effect.
Frequently asked questions
How often should I review search terms?
Weekly for high-spend accounts, at minimum monthly for smaller ones. Waste accumulates continuously, not in a single event.
Does this apply to Meta Ads too?
Meta doesn't expose search terms the way Google does, since most Meta placements aren't query-based — the closest equivalent there is audience and placement waste, covered separately.
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