Foam-Less Liquid Defoamer Foam-Less is a concentrated defoamer and should be used as a prevenative maintenance. Foam from detergent build-up makes your machine work harder. It can ruin your equipment and cut its cleaning effectiveness. Prevent foam problems by adding Foam-Less through your vac hose or directly into your waste tank. Dilution: 1:16; 1 - 2 oz. to waste tank

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