"Don't let your customers leave your store without Thetford's Aqua-Kem liquid deodorant. Every one of your motor home customers, require regular black water treatment products and this concentrated holding tank deodorant works instantly to chemically neutralize odors. The long-lasting fresh fragrance is biodegradable and septic tank safe. A 3-pack of Thetford Aqua-Kem, Stock #20568, is on sale now for $3.28 - when purchased by the case. We appreciate your call to COAST DISTRIBUTION. Please hold."