Farcent Granular Drain Clog Remover. Formulated to help dissolve dirt and accumulated residue that can cause clogged drains. The convenient granular formula helps improve water flow through drain pipes and provides an effective solution for maintaining and clearing clogged drainage systems. - Name: FARCENT Drain Opener For Piper 65 g x 3 - Brand: FARCENT - Unit Amount: 3 unit(s) How to Preserve: Store in a cool, dry place away from direct sunlight.