Our toilet cleaning tablets contain sodium bicarbonate and citric acid. It can effectively remove stubborn dirt in the toilet. Its use method is simple: put a piece of product in the toilet, soak for 30 minutes until completely dissolved, for stubborn stains, use a toilet brush to clean the glaze of the toilet. Rinse well with water. And it can work automatically, saving time and effort, and improving daily cleaning efficiency. Strong dissolves urine scale and scale, thoroughly cleans, and keeps the toilet white.