Cleans. Prevents future build-up. Fights toilet ring. Freshens up to 4 weeks. Fragrance boost. Smell scent. 4-in-1 Automatic Toilet Care: cleans toilets; prevents future buildup; fights toilet ring; freshens up to 4 weeks. Septic tank safe. Questions or comments? Call 1-800-290-0158 or visit us at www.softscrub.com. Please recycle. Made in Serbia.