Our cleaning tablets contain surfactants, lemon extract, sodium percarbonate. It can remove the scale, dirt, rust and other stubborn stains on the toilet tank and toilet, and also remove the smell on the toilet; Easy to use, can quickly clean stubborn dirt inside the toilet, and has a gentle composition that will not damage any parts of the pipe or toilet. Its use method is very simple: take an effervescent tablet, put it into the water tank; The effervescent tablets will slowly dissolve in the tank and can be cleaned each time the water is turned on and off. With slow release technology, you can continuously clean the toilet and keep the toilet shine for 30 days, saving you more time and effort.