does-click-fraud-protection-work

Watch for conversions falling at the same rate as clicks. That means the blocking is removing buyers rather than waste. Other warning signs are impressions dropping in a geography you actively sell into, and inbound callers mentioning they could not reach your site. Shared office and carrier networks put many real people behind one address, so over-blocking shows up as lost leads.

It can be, if you act on the reporting. Even where exclusions cannot be applied, knowing which geographies, times of day and device types produce clicks that never convert lets you change bids, ad schedules and targeting by hand. That is a smaller benefit than blocking and it requires you to do the work. If you will not act on the data, do not pay for it.

It depends on how they are doing it. A competitor clicking from a fixed office connection is straightforward to exclude, and once excluded your ad stops being shown to them. Someone using mobile data or a VPN can change addresses faster than any exclusion list can follow, and Google Ads caps exclusions at 500 per campaign, so you cannot outlast them by adding entries.

Because the same software decides what counts as fraud and then counts how much of it was stopped. That number cannot contradict itself, so it is not evidence of anything. It is not necessarily dishonest, it is just self-referential. Use figures from your Google Ads account instead, since those are measured independently of whichever vendor you are evaluating.

Protect one campaign and leave a comparable one unprotected as a control. Run both for a full month, since two weeks cannot separate a real effect from normal variation. Then compare cost per conversion, not click counts. A drop in clicks alone proves only that something was blocked. A drop in cost per conversion proves the blocked traffic was worthless to you.

It works in a narrow way. Against repeat sources that keep hitting the same campaigns, exclusions genuinely stop the ad being served and no further click is billed. Against a single motivated person rotating addresses, or on campaign types that do not support exclusions, it does not. Whether that narrow win is worth the subscription depends entirely on your cost per click.