... available 4.factory sales directly Powder Drain Cleaner/ Drain Sterilize, Powder Drain Cleaner, toilet drain cleaner, sink drain cleanerProduct Features:1.Dissolves dirt, grime ... and food remains that accumulate on the wall of drain pipes.2.Formulated to create large amounts of bubbles when ... corrosive and will not damage pipes.Instructions: 1) For drain pipe cleaning, pull out the plug, empty one bag ...