Our toilet cleaning block contains lemon extract, disodium EDTA, and sodium bicarbonate. It provides a long-lasting fresh fragrance, keeping the bathroom consistently clean. With its stain-removing formula, it effectively eliminates dirt and odors from the toilet. The usage method is simple: 1. Place one block in the toilet tank, where it will gradually dissolve over time. 2. After each use, press the flush button to clean the toilet. The cleaning effect lasts up to three months, maintaining long-term cleanliness and improving the bathroom environment.