Betco FiberPRO Foam Control Liquid Defoamer - Ready-To-Use - 128 fl oz (4 quart) - 560 oz (35 lb) - Unscented - White - 4 / Carton Highly concentrated, FiberPro Foam Control Liquid Defoamer quickly penetrates and knocks down foam to eliminate problems associated with recovery tank foaming. Fast-acting formula breaks foam on contact and eliminates downtime and wasted effort in dumping recovery tanks. Defoamer is recommended for use in recovery tanks of extraction or automatic scrubbers where foaming might be a problem. Versatile formula can also be used anywhere foaming is a problem.