Instantly dissolve bird poop and associated stains. Safe for use on painted surfaces, walls, and carpeting. Gallon refill saves money. Refill spray bottle or use with brush head bottle assures even application on perches & cages. Non-Toxic & Bio-Degradable. Poop-Off ® is the number one recommended bird dropping remover in the world. Three years to formulate and three years of testing were needed to guarantee a safe product around all avian species. The product is so safe it is used by the world famous San Diego Zoo, respected avian breeders and bird lovers. Poop-Off ® contains no-contents that have been found to be dangerous to birds such as chemicals, solvents, orange oil, detergent, citrus fragrances, alcohol or bleach. Safe to use with the bird inside the cage. Non-Toxic & Bio-Degradable.