Gravity makes all chemicals run along the bottom. Nor can chemicals remove much waste in vertical pipes because they flow through so quickly. The bacteria in Bio-Clean are alive and will go anywhere there is food. They will remove the gunk chemicals leave behind. Only roots that are completely dead.
Roots enter sewer pipes seeking the rich organic food supplied by the build-up.
As roots feed on the waste they grow, branch out and eventually restrict flow. Periodic use of enough Bio-Clean and water to reach the root area will eliminate the waste they seek. In this manner, the use of Bio-Clean discourages root growth in sewers. Absolutely - in several ways. The bacteria in Bio-Clean are specially selected to digest a larger variety of waste, and metabolize it faster, than naturally occurring bacteria or yeast additives.