One Step Cleaner & Resealer, Ready-To-Use Cleaner For Stone, Grout & Tile, Clean & Reseal Stone Grout Or Tile In A Single Step, One Step Contains Tile Lab Surface Guard Penetrating Sealer, Formulated To Cut Through Grease & Dirt & To Inhibit The Growth Of Mold & Mildew, Leaves A Fresh Citrus Scent.