The PAN PUCK locks itself into place, has a slow and continuous product release, works until completely used up, and eliminates odors. As moisture drips on or flows over the puck, it activates the chemicals to lock the PAN PUCK into place. Once the puck is locked into place, it will never move or block the drain line. The locked puck will form a gel that will slowly and continuously clean sludge and other accumulations, eliminating plugged condensate drain lines and stale water odors. Since there is no residual packaging associated with PAN PUCKS, there is nothing to remove from the drain pan prior to subsequent applications. The PAN PUCKS are 100% biodegradable, will never release any chlorine or other noxious/toxic fumes and are available in three sizes to handle any size system. This condensate drain pan cleaner is great for use in hospitals, hotels, food preparation areas, office building, schools, nursing homes, apartments, industrial plants and more.