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# Clean signal guard

Clean Signal Guard prevents Google and Meta advertising pixels from firing on traffic Tapper has identified as invalid.

## **Why it matters**

Ad platforms optimise based on the signals they receive. When bots, scrapers, competitors, or other low-quality users trigger your pixels, those signals can feed back into platform optimisation and affect bidding, targeting, and conversion modelling.
This can lead to:
* higher CPAs
* less stable performance
* distorted audience and conversion signals

## **How it works**

When Tapper classifies a session as invalid, Clean Signal Guard suppresses the relevant advertising pixels.
This means:
* Google and Meta pixels do not fire
* invalid sessions are not sent back to ad platforms
* optimisation models learn from cleaner user data

## **What this helps with**

Clean Signal Guard helps:
* protect optimisation quality
* improve attribution accuracy
* reduce the impact of fake or low-quality traffic on campaign performance

## **Best for**

Clean Signal Guard is especially useful for:
* Google Ads and Meta accounts
* Performance Max and Advantage+ campaigns
* accounts seeing rising CPA despite strong reported metrics

## **Summary**

Blocking invalid traffic is important, but preventing that traffic from shaping ad platform optimisation is just as important. Clean Signal Guard helps keep invalid users out of your optimisation signals.