Put some fizz into your cleaning routine. Just drop one in the bowl, allow it to work for 10 minutes or so, brush and flush! Great for toilets, garbage disposals, litterboxes, and more. (For litterboxes, use the lavender mint scent.) Ingredients: Baking soda, Citric acid, Corn Starch, SLSa, Cream of Tartar, Borax, Essential Oils, Peroxide, Isopropanol.