Our toilet cleaning effervescent tablets contain sodium bicarbonate and citric acid. It can effectively clean the surface and interior of the toilet, make the toilet look new, can remove the smell in the toilet, make the whole bathroom more fresh, and give you a better toilet environment. Its use method is very simple: take a piece of effervescent tablet in the toilet, let it stand for 3 minutes to completely dissolve, use the toilet brush to do basic cleaning, press the toilet switch to flush and clean. Helps remove sediment from the drain, prevents clogging, makes flushing smoother and easier to use, just drop the tablet in the toilet and wait for it to dissolve before flushing, saving you time and effort.