Zep’s AC Pan tablets contain a potent, broad spectrum bacteriostat that controls slime, legionella and harmful bacteria and eliminates blockages in drains and pans. The biocide releases continuously to maintain the pans, which in turn protects your walls and ceilings from condensate overflow. It can be used in apartments, refrigerated display cases, vending machines and industrial air systems. Each tablet provides three months of service life. Available in cases of 24 tablets.