Cut straight to the source of your pipe's buildup with CLR Clog-Free Drain Enjoy the convenience and ease of clearing your pipes without any messy mixing or harmful chemicals. Simply power spray and go! CLR Clog-Free Drain uses powerful aerosol to efficiently dissolve clogs such as oil, soap scum, shampoo, conditioner, shaving cream, toothpaste and kitchen waste. By eliminating buildup at the source, CLR is able to efficiently break down.. See full description for further details