Mr Muscle Drain Crystals heat water to melt grease and gunge in your kitchen sink, clearing blockages and helping remove unpleasant odors. To easily clean your drain, just pour 50 g down the plughole, immediately followed by half a liter of warm water. Then wait 15 minutes, and run cold water through your solved clog. Mr Muscle Drain Crystals clears up your drain with ease, allowing you to clean less and live more.