Vacplus Automatic Toilet Bowl Cleaner Tablets, Drop-In Tank Cleaner for Bathroom, Prevent Stains & Deodorize, Long-Lasting Cleaning Tabs, Easy-Use Freshener for Bowl & Tank, 100 Pack

EFFECTIVE IN CLEANING - Effectively help you clean the tank, water pipe and other parts of the toilet. | LONG-LASTING - Each toilet cleaner tablet lasts up to 15 Days (or 20 flushes daily), 100 tablets are for 50 months supply. BTW, each toilet tablet's lifetime may vary. | HOW TO USE - DO NOT tear off the blue outer protective film, which is soluble in water tank directly. Please leave the toilet tank cleaner in the water tank for at least 1 hours to dissolve sufficiently until water gets blue before flushing. | POINTS FOR ATTENTION - When the blue toilet bowl tablet dissolves completely, the blue will fade, a new toilet tank cleaner should be put into the tank. This product cannot completely replace the toilet brush. It is mainly to help maintain a clean toilet tank and reduce the dirt accumulation on the tank. Please clean the toilet tank with a toilet brush before the first-time use, so as to make a better use of this product. | CONVENIENT AND EASY TO USE - Vacplus toilet cleaner is convenient and easy to use. It will not cause any damage to the internal parts of the toilet tank.