Tips to Clean and Maintain Glass Tiles Westside Tile and
Wash the Backsplash. Clean the glass backsplash tile in the kitchen in the same way as the bathroom glass mosaic tiles using one-half teaspoon dish liquid in a spray bottle filled with warm water. Spray the mixture over the backsplash and then wipe with a clean damp sponge. Wipe that off with a clean damp cloth and then dry.