Everbuild forever white grout reviver everbuild fwrevive forever white grout reviver is the easy way to restore discoloured and dirty grout to a bright white finish simply apply to grout lines using the easy to use applicator allow to dry and remove any excess residue with a damp cloth depending upon size of tile will cover approx 20m squared of tiles contains steritouch for long lasting protection against discolouration caused by bacteria mildew and mould growth everbuild fwrevive fore