The usual cause for sluggish drains is a build-up of grease, hair, soap scum or bath oils. Most drain cleaners require 2 to 6 hours (or overnight) for results. Insta-Flo will liquefy hair and grease in less than 60 secs. HOT water activates INSTA-FLO's dry, odorless crystals. Within 60 sec the drain is clear even on the most difficult drain blockage.
