MOM Tip: Clean your toilet brush by dumping 1 cup of washing soda, 1/2 cup hydrogen peroxide, and 1/2 cup white vinegar into the water of the toilet bowl and letting the brush sit in the mixture for several hours. Flush and rinse the brush in the fresh water, then let the brush dry by laying the brush across one part of the seat so that brush itself hangs over the water, then closing the lid to hold the brush in place.