Our toilet cleaning effervescent tablets contain baking soda, lemon extract, and biological enzymes It can effectively remove stubborn dirt such as urine scale, scale, rust, etc , while also removing the bad smell and pungent smell every time the toilet is flushed; it has a light and fresh fragrance, which can reduce the odor in the bathroom and make the bathroom environment fresher Its usage is very simple: flush the toilet; take an effervescent tablet and put it in the water tank; let it stand for a few minutes until it is completely dissolved; press the toilet switch, flush and restore cleaning The toilet cleaning effervescent tablet contains cleaning ingredients to help remove stubborn toilet stains, rust and discoloration, making the toilet and the inside of the water tank cleaner; it is convenient to remove dirt and clean the toilet without any worries The effervescent formula ensures that the toilet is deeply and thoroughly cleaned, leaving the toilet sparkling and clean as new 20pcs Toilet Cleaning Effervescent Tablets Toilet Cleaning Tablets Content: 478 4g Ingredients: baking soda, lemon extract, biological enzyme