Airkem A-33 Dry detergent/disinfectant tablets hospital-grade 7930-0-436-8012. Each canister has 90--1/2oz packets. I have 36 canisters (three thousand two hundred forty packets--enough for 8 3/4 years if you use one packet a day or enough for 62 years if you use one packet per week). Extra inventory used by a school. $4 cash per canister or all 36 canisters for $45 cash.