Homemade Tub, Tile, and Grout Cleaner What you'll need: 1/2 cup baking soda 1/4 cup hydrogen peroxide 1 teaspoon liquid dish soap 1. Mix together the baking soda, hydrogen peroxide, and dish soap in a small squeeze-top container. 2. Squeeze the mixture on grout or tile & leave for 5 minutes or longer if needed. 3. Scrub then wipe away the cleaning mixture, rinsing with water.