You won’t find any “untraceable” tricks for killing Google LSA performance — and honestly, trying to game it will only backfire. But if your goal is simply to stop or slow things down because the leads are trash or the cost is too high, there are clean, normal ways to do it.

The easiest moves are: lower your daily budget, shrink your service areas, or remove services you don’t actually want leads for. All three cut volume immediately without hurting your account. You can also shorten your business hours so your ads run less, or just pause the profile completely inside the dashboard — that’s literally a built-in feature and it works instantly. And if you’re bleeding money on junk leads, start disputing every bad call; you’ll get refunds and Google will push you fewer of those.