UltraCare Grout Refresh Pre-Cleaner is a ready-to-use cleaner specially formulated to prepare grout joints before application of MAPEI"s Grout Refresh. UltraCare Grout Refresh Pre-Cleaner will remove grease, dirt, soil, soap scum and hard-water deposits from grout joints to ensure a superior bond for Grout Refresh. This product should not be used on epoxy grout joints.