Bests & Worsts Reviews from Amazon

If you have a combination of human waste, grease, paper, and hair and similar in your main line, pour a bottle of this in it in the TOILET, preferably on the ground floor, flush once. Let it sit for five hours, flush it out. SURPRIZE! No more sewar gas, no more oder, no more tripe backup into your drains. It seems to harmless in the Bottle. But unleash it on a main line and you harmlessly remove all the stuff causing you trouble. It does not dissolbe roots, but you can use a Copper Sulfate product first and let it take care, then use this stuff to clean all the garbage coating your pipes and blockages. I especially have a "small pipe size" pipes that "merge with neighbor" issue. Amazing how rapidly this product worked out my difficulties. I imagine it won't work for everyone as each situation is different, but my 80 year old home is fee of the odors, backups and crud that were plaguing my toilets. Grade A!