Foam Cannon

A foam cannon is useful, but I’m not here to worship foam. I use it because it’s a common way people apply these products, so it belongs in the test ecosystem. Just remember: the rinse result is the scoreboard.

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Pros

+Easy, fast coverage for pre-wash application
+Works well with many shampoos and foaming pre-washes

Cons

-Foam can distract from actual cleaning performance
-Performance varies heavily with pressure washer and orifice setup

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