Search query optimization is maintenance, not a one-time setup task — campaigns that were efficient at launch drift over time as search behavior shifts and new irrelevant query matches creep in, especially under broader match types.
The core recurring task: search terms report review
Review the Search Terms report on a regular cadence (weekly for active, higher-spend campaigns; biweekly to monthly for lower-volume ones) and look specifically for queries that triggered an ad but clearly don't match real intent for your offer.
Negative keyword mining
Every irrelevant query found in the search terms report should become a negative keyword, added at the right level (ad group vs. campaign) depending on whether the irrelevance is specific to one ad group or applies broadly — this single habit, done consistently, is one of the highest-leverage account maintenance tasks in Google Ads.
Match type review
Broad match can surface valuable, unanticipated queries (similar to the discovery value of Dynamic Search Ads) but also drifts furthest from intended targeting over time — review whether broad match keywords are still producing relevant queries, or whether tightening to phrase match would improve relevance without much volume loss.
Watch for query cannibalization across campaigns
Check whether the same query is triggering ads from multiple campaigns (a manual campaign and a DSA campaign, for example) — this creates internal competition that inflates cost without any real benefit, and is only catchable through a deliberate cross-campaign review.
A simple maintenance cadence
- Weekly: scan for obviously irrelevant queries on higher-spend campaigns and add negatives immediately.
- Monthly: a deeper review across all campaigns, including match type performance and cross-campaign query overlap.
- Quarterly: reassess whether the overall keyword and match type strategy still matches current search behavior and business priorities.
| Task | Cadence | What It Catches |
|---|---|---|
| Search terms review | Weekly (high-spend) to monthly (lower-volume) | Irrelevant queries wasting spend |
| Match type review | Monthly | Broad match drifting from real intent |
| Cross-campaign overlap check | Monthly | Internal query cannibalization inflating cost |
Search query optimization is unglamorous, recurring maintenance — but it's one of the more reliable ways to keep spend efficient without any creative or bidding changes, and it's a standing task in every Paid Media & PPC account I manage.
FAQ
How often should you review the Google Ads search terms report?
Review weekly for active, higher-spend campaigns to catch irrelevant queries quickly, and biweekly to monthly for lower-volume campaigns — this should be a recurring maintenance task, not a one-time setup step, since search behavior shifts over time and new irrelevant query matches creep in continuously, especially under broader match types.
- Higher-spend campaigns warrant more frequent review given the greater cost impact of irrelevant queries.
- This is an ongoing maintenance task, not something to configure once and leave alone.
Can the same search query trigger ads from two different Google Ads campaigns?
Yes — this is a common and often overlooked issue, especially between a manually managed campaign and a Dynamic Search Ads campaign, and it creates internal competition that inflates cost without any real benefit; catching it requires a deliberate cross-campaign query review, since neither campaign in isolation reveals the overlap.
- Cross-campaign query cannibalization is only visible through a deliberate comparison, not from reviewing one campaign alone.
- This is a common and fixable source of wasted ad spend that a routine review catches.