Each pack is to be used with 2 gallons of water until fully dissolved. This is to be used quickly after you have installed grout between your tiles. Its purpose is to clean any remaining grout residue from the front of the tile. Be sure to use with a grout sponge.

This is specifically to be used with Spectralock Pro Epoxy Grout, so using this with any other type of grout is at your own risk.