Thetford's Fresh Water Tank Sanitizer is an easy-to-use 2-part system designed for cleaning and sanitizing freshwater tanks and plumbing on RVs, trailers, campers, boats, water coolers, coolers, ice machines, refrigerators, ice chests, or any washable hard, non-porous surfaces.
Step 1: Clean with the detergent
Step 2: Sanitize the water
The treatment is effective even in hard water and will not leave grit or soap scum. Not a drinking water additive.