Don't use harsh chemicals. Grout cleaner : The Recipe: * 1 part Dawn MUST BE TO WORK * 1 part baking soda * 2 parts hydrogen peroxide: use more Hydrogen peroxide depending on the size of the area. Make a lot! Mix the ingredients well. Apply to the stain. Scrub with a brush. Pour extra all over and let sit for a good hour. Just rinse off.
1/2 cup baking soda 1/3 cup household ammonia 1/4 cup white vinegar 7 cups warm water Directions: Combine in a gallon container,do yourself a favor, and put the water in FIRST! Shake. Don't get it near anything with BLEACH!To use: Fill a spray bottle, spray onto tile/grout- wipe with a damp cloth or sponge, or use a scrub brush. by Mummigurl