Pressure-washer foam cannons only — no hand sprayers, no bottle foamers. The cannon controls foam density, dwell and uniformity, which is what decides how hard your pre-wash chemistry actually works. Pair one with a proper snow foam like Labocosmetica PRÌMUS 2.0 or Koch Chemie GSF and the pre-wash stage starts doing the cleaning for you.
Not sure which cannon suits your machine? Our foam-cannon buyer's guide explains flow rate, orifice size and fittings before you choose.
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