Liquid Defoamer reduces foam caused by detergent left over from previous cleanings (often from a homeowner who doesn't rinse off the cleaning solutions they use), and when you're using a high-foaming cleaner. Foam from detergent buildup 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. Highly concentrated. Don't let a little foam slow you down. Dilution Ratios: 8 oz./gal. RTU pH: 7 Contains: 1 gallon