Abstract: A biodegradable air freshener that breaks down in the presence of water to minimize solid waste, comprising a water soluble substrate substantially comprising foamed vegetable starch, and a liquid fragrance carried in the substrate. The substrate is preferably made of corn and or potato starch. The liquid fragrance may be from about 0.01 to about 10 times the weight of the substrate. A coloring agent may optionally be provided in the liquid fragrance to impart color to the air freshener. Because the substrate is made from a water soluble starch, it dissolves in water leaving little or no solid waste.