POWERFUL FORMULA - Toilet bowl cleaner tablets contain active biological ingredients that can degrade biological components in stains, thereby easily cleaning areas in the toilet that cannot be cleaned with a toilet brush. TOILET CLEANING TABLETS - Can be used to remove stubborn dirt below the waterline, as well as urine stains, limescale, rust stains, and old stains in the toilet bowl, achieving thorough cleanliness. EFFORTLESS CLEANING - Effervescent tablets dissolve quickly, effectively cleaning the toilet during daily cleaning without the need for scrubbing, only for rust and scale. Stubborn stains may require gentle brushing. Adding stabilizers and citric acid forms a protective film on the surface of the toilet, effectively slowing down the formation of stains, keeping the toilet bright and shiny for a long time. LONG-LASTING FRESHNESS - Leaves behind a lingering lemon scent that keeps your bathroom smelling inviting for hours. Each pack contains 16 tablets, providing you with ample supply for regular cleaning sessions.