There is a particular kind of frustration in opening Google Ads and finding your carefully made campaign beside a video, app, or website you would never have chosen. The instinct is to block everything unfamiliar. I understand it—but a placement name alone cannot tell us whether a click was accidental, a conversion was valuable, or the surrounding content was wrong for the brand.

A placement exclusion is a firm instruction: do not show eligible ads on that specific site, page, app, YouTube channel, or video. Use it when the placement conflicts with brand standards or when enough outcome data shows that it is a poor use of budget. It is not a substitute for fixing conversion tracking, choosing the right campaign type, or understanding why the campaign reached that inventory.

First, find where the ads actually appeared

Open Campaigns → Insights and reports → When and where ads showed, then select Where ads showed. Choose the campaign and date range that matter. Add business metrics such as conversions, conversion value, cost, and cost per conversion; impressions or clicks by themselves rarely settle the decision.

Read the row before judging the name

  • Brand conflict: Would appearing beside this content violate a written suitability rule even if it converted?

  • Economic result: Has the placement accumulated enough spend and conversion-cycle time to make its cost or value meaningful?

  • Measurement quality: Are the conversions real business outcomes, or shallow events such as an accidental button tap?

  • Pattern: Is this one odd row, or does a group of placements reveal a broader inventory, creative, or audience problem?

  • Scope: Does the concern belong to one ad group, one campaign, every campaign in the account, or every child account managed by an MCC?

Choose the smallest scope that expresses the rule

Scope is the quiet decision that causes the biggest surprises. An ad-group exclusion is precise. A campaign exclusion affects every ad group in that campaign. An account-level exclusion is a broad safety rail and overrides lower-level intent. A manager-account placement exclusion list can be inherited by linked child accounts.

  • Ad group: use when a placement is wrong for one message or audience but may suit another ad group.

  • Campaign: use when the entire campaign should avoid it and the campaign type supports that level.

  • Account: use for a durable brand rule that should govern all applicable campaigns; Performance Max placement exclusions are managed here.

  • Manager account list: use when an organization has an approved exclusion policy shared across multiple linked accounts.

Exclude a placement from one campaign or ad group

  1. Open Campaigns → Audiences, keywords, and content → Content.

  2. Select Exclusions, then Edit exclusions.

  3. Choose Campaign or Ad group, and select the exact destination you intend to change.

  4. Choose placement exclusions. Search for the site, app, YouTube channel, or video, or use the entry option for multiple exact placements.

  5. Review the selected scope and placements once more, then save.

  6. Open change history and record the date, owner, reason, and review window for the decision.

For Display campaigns, Google documents a limit of 10,000 excluded placements per campaign. A list that grows anywhere near that size deserves a strategy review: endless reactive blocking can conceal weak goals, poor conversion signals, unsuitable inventory settings, or a campaign that was never a good fit.

Set an account-wide placement boundary

  1. Open Tools → Content suitability.

  2. Expand Advanced settings, then Excluded placements.

  3. Search for the content or enter the URLs, apps, channel IDs, or video URLs you need to exclude.

  4. Confirm that this is genuinely an account-wide rule, then save.

  5. Verify the saved change in account-level change history. Google says new account-level exclusions typically take effect within 12 hours.

Placement exclusion is not content suitability

A placement exclusion identifies a particular destination. Content suitability controls express broader tolerance for categories, themes, inventory types, sensitive content, or digital content labels. If your concern is “never appear beside this kind of tragedy or mature content,” hunting individual URLs forever is the wrong abstraction. If the concern is one demonstrably unsuitable channel, a specific placement exclusion is clearer.

Nor is excluding a placement the same as removing one you targeted. Removing a targeted placement can leave other targeting signals—such as topics or keywords—free to match it again. Exclusion makes the placement ineligible at the selected scope.

Do not turn “mobile app” into a synonym for bad traffic

The previous version of this article recommended sweeping category codes to remove mobile apps. That advice does not belong in a current campaign. Apps, websites, and YouTube inventory can each produce excellent or poor outcomes; the answer depends on the offer, creative, audience, placement context, and conversion signal.

Google still supports individual app exclusions, but an exact app decision is more defensible than copying a mysterious “exclude all apps” string from an old tutorial. If apps repeatedly generate accidental-looking leads, investigate mobile UX and the definition of a conversion before assuming every app user lacks intent.

A calmer performance test

Suppose a mobile game spent ₹4,000 and recorded no sale. Before excluding it, compare that spend with the campaign’s normal acquisition cost, allow for conversion delay, and check whether offline sales are imported. If the same placement repeatedly consumes meaningful budget without qualified outcomes, exclude it at the narrowest sensible scope. If it conflicts with a documented brand rule, you do not need to wait for a failed conversion experiment.

  1. Save a baseline: spend, qualified conversions, value, total campaign volume, and the measurement window.

  2. State the reason as either brand suitability or performance; do not blur the two.

  3. Make one scoped exclusion rather than changing bids, creative, audience, and inventory simultaneously.

  4. Wait through the normal conversion lag and enough comparable traffic.

  5. Measure both the avoided waste and any lost volume. Reverse the decision when the evidence changes.

When the exclusion seems to do nothing

  • Ads appeared shortly after saving: account-level exclusions may take up to 12 hours to take effect; confirm the saved change and its timestamp.

  • A subdomain still appears: check whether you excluded only the www host, used the intended domain form, or are observing Search Partner behavior.

  • Another country domain appears: add each country-code domain that the policy requires.

  • Performance Max has no campaign control: use account-level Content suitability or an applicable manager-account list.

  • The placement returned after you removed it: removal from targeting is not exclusion; add it to Exclusions at the correct scope.

  • Report totals do not match billing: the placement report is non-exhaustive and not designed for billing reconciliation.

  • Reach fell across unrelated campaigns: inspect account- and manager-level lists; a broad exclusion may be overriding more specific campaign intent.

What a healthy exclusion list feels like

The list should feel explainable, not impressive. Every row should have an owner and a reason you would be comfortable defending six months later. The win is not a giant blacklist. It is opening the report and knowing that the campaign has room to learn while the brand’s real boundaries remain intact.

Official Google references used here