Our Toilet Bowl Cleaner contain Lemon Extract, Sodium Percarbonate, Surfactant. It can strongly remove all kinds of stains inside and outside the toilet, the reaction is fast after use, the cleaning ingredients are strong, after dissolution, the brush can effectively remove urine stains, scale and other stubborn stains. Its use method is very simple: take a piece of effervescent tablet in the toilet, let it sit for 10 minutes to completely dissolve, press the toilet switch to flush and clean. It can quickly remove various stains in the toilet, remove the pungent smell in the toilet, efficiently remove bacteria, and make the toilet clean and sanitary.