Abstract: A self-cleaning toilet which embodies the combination of an open top toilet bowl and elevated reservoir tank mounted above said bowl, the reservoir tank including a water supply inlet for supplying water to said reservoir tank for discharge to said toilet bowl, and a separate compartment within which a biodegradable chemical or biological substance can be stored, removed therefrom and admixed with water, and the liquid supplied to the toilet bowl to clean, disinfect and deodorize said toilet bowl.