Our toilet decontamination effervescent tablets contain sodium bicarbonate and citric acid. It can quickly break down stains and restore the cleanliness of the toilet. One piece dissolves quickly and is easy to operate. The way to use it is simple: open the package, take out the effervescent tablet, and put it in the toilet water. Soak for 30 minutes until completely dissolved. Remove stubborn stains with a toilet brush and flush with a flush device. And it can be purified accurately, the formula is safe, and the toilet glaze is kept clean and undamaged.