EatOils™ BIOBLAST™ Biochemical Cleaner and Grout Treatment breaks down organic residue and keeps grout lines clear with continuous, non-stop cleaning action for up to 72 hours! EATOILS™ BIOBLAST™ is a great cleaner/degreaser for general purpose cleaning that also provides cost effective grease trap and drain maintenance for smaller restaurants and facilities. Dilute at 2 - 4 oz./gal(20 - 40 ml/L) of warm water for cleaning, use concentrated for drain & grease trap maintenance.