The usual cause for sluggish drains is a build-up of grease, hair, soap scum, or bath oils, and that's when this Insta Flo crystal drain cleaner comes to your aid. Most drain cleaners require 2 to 6 hours (or overnight) for results, whereas Insta Flo will liquefy hair and grease in less than 60 seconds. Hot water activates Insta-Flo's dry, odorless crystals to unclog a drain. Within 60 seconds, even the most challenging drain blockage in a small drain is cleared with this efficient drain cleaning solution. Insta-Floc cleaner is even great for sewer lines, grease traps, and septic systems. Insta-Flo's drain opener has a non-acid formula that will not harm fine fixtures, porcelain, chrome trim, polished brass, plastic, or metal pipes; not just that, it also protects pipes from corrosion. This sewer cleaning solution is best for residential and commercial purposes.