For a much more Earth-friendly alternative to store-bought toilet bowl cleaner, put 1/4 cup borax in the toilet bowl and let sit for a few hours or overnight. The next day, scrub – or scrub with a solution of 1/2 cup borax to one gallon of water. A few drops of pine oil can be added for increased disinfecting. Or, scrub with baking soda and/or liquid soap. To remove stains, pour 1/4 cup borax and let sit for at least 30 minutes, scrub and flush.