Close the searches that burn money, from one list

Short answer

Negative keywords are kept as shared lists rather than campaign by campaign: you write one list, attach it to the campaigns and ad groups you want, and one action writes it to all of them. If a negative is already there it is skipped — applying a list twice breaks nothing.

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InsightsNegative isolationNegative lists

Negative list — “Irrelevant searches”applied to 6 campaigns and 11 ad groups

Negative keyword Match Clicks Wasted spend State

glass tea kettlePhrase86$28.40Applied

electric kettleExact142$51.12Applied

cat litter scoopPhrase57$18.24Applied

office chair wheelsBroad39$12.09Pending approval

B0F1NKG7K7ASIN24$9.36Pending approval

5 entries · written to every campaign on the list348$119.21

One list attached to several campaigns; wasted spend per negative is shown next to it.

Writing the same negative into thirty campaigns by hand

An irrelevant search term usually leaks into more than one campaign. Adding it everywhere by hand is slow, and the one campaign you forget keeps paying for it.

A shared list makes the negative a decision rather than a chore: write it once, attach it where it belongs, and the campaigns stay in sync as the list grows.

Keywords and ASINs in the same list

Some waste comes from search terms and some from competing product pages. Splitting those into two tools means two places to remember.

Both live in the same list, labelled by match type, with the wasted spend each one was responsible for.

Frequently asked questions

Can one negative list cover several campaigns?

Yes. A list is attached to as many campaigns and ad groups as you want and written to all of them in one action.

What happens if the negative is already there?

It is skipped. Applying the same list twice does not create duplicates or errors.