ANTIFOAM-DEFOAMER SILICONE EMULSION; A HIGHLY CONCENTRATED DEFOAMER TO BE USED ONLY IN RECOVERY TANKS AND/OR PICK-UP HOSE OF VACUUMS OR CARPET STEAM CLEANING MACHINES; WILL REDUCE OR ELIMINATE FOAM THAT IS GENERATED FROM SHAMPOO RESIDUE WHEN THE CARPET IS BEING STEAM CLEANED; BOX CONTAINS 4 1-GALLON CONTAINERS