Use Viper Renew when all other cleaners have failed. It works on the
acid side of the pH scale removing soils and stains on grout, tile and
stone that have been neglected for years. Viper Renew actually removes a
very thin layer of grout, taking with it all hard water deposits, soap
scum and efflorescence. The proprietary organic salt in Viper Renew is
twice as effective as phosphoric acid at dissolving calcium carbonate,
and without the unpleasant fumes. Keep a gallon of Viper Renew on your
truck so you'll be prepared for even the most extreme tile and grout
cleaning situation.
Dilution: 1:1
RTU pH: 1
Package: 1 Gallon
Material Safety Data Sheet: 