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 seconds. Hot water activates Insta-Flo's dry, odorless crystals. Within 60 seconds, even the most difficult drain blockage in a small drain is cleared. Insta-Flo is even great for sewer lines, grease traps and septic systems. Insta-Flo's non-acid formula will not harm fine fixtures, porcelain, chrome trim, polished brass, plastic or metal pipes. 1 lbs. Insta-Flo crystal drain cleaner works in 60 secondsNot sold in Big Box StoresUse hot water to dissolve hair and greaseFor use in small drains, grease traps, septic tank maintenanceOdorlessPlastic bottleWorks in 60 seconds!Also use for Septic tank maintenanceSafe for drain linesSafe for fixtures