Antifoaming Agent that eliminates unwanted foaming in spray applications involving recirculating sprayers and other high agitation equipment. Shake Down is completely innocuous to chemicals and wont clog your spray nozzles either. ACTIVE INGREDIENT: POLYDIMETHYLSILOXANE. RATE 1/2-1 oz./100 gal. spray solution (15-30 ml/378L spray solution. For best results, add Shake Down to solution prior to foaming. If foam already exists, add Shake Down until foam is eliminated.