4 tablet value pack. Stain repel. Helps keep your toilet bowl stain-free. Cleans and deodorizes with every flush. Helps keep your toilet bowl stain-free. Bowl water not harmful to children or pets (However, it is not recommended that pets regularly drink water from the toilet). Won't harm plumbing or septic systems. Repels tough hard water, mineral, and limescale stains. Made in Mexico.