This hurri clean automatic toilet and tank cleaner is the next best thing to a self-cleaning toilet. No need to scrub, just pull and pour-in for an instant clean with the an instant solution for a totally clean tank and toilet bowl. It formulae works on the principle of foam and flush. The foaming action scours away hard water stains, and eliminates stains from mineral and phosphate deposits, mold build up, Mildew, bacteria, and more. It not only cleans the tank and toilet bowl, it also cleans the jet stream and improves the flush system hence saves your precious time. It is also very fast acting and completely cleans in under 6 hours. Just pour the entire package into the toilet, let it sit for six hours or overnight, and then flush. It is very easy to use and is chlorine free, odor free and is safe for the all plumbing and septic systems.