Our toilet cleaning effervescent tablets contain citric acid and sodium bicarbonate. It can have a strong bactericidal ability, can kill a variety of bacteria, effectively clean and disinfect the surface of the toilet, and make the bathroom cleaner and sanitary. It helps to improve the cleaning ability of cleaning products. It can also help other ingredients work better and improve cleaning results. The way to use it is very simple: 1. Take an effervescent tablet and leave it in the toilet for 10 minutes until it is completely dissolved. 2. Finally, press the toilet switch for flushing and cleaning. Deep cleaning, effective removal of stains and dirt. Effervescent tablet takes effect quickly and has an immediate cleaning effect.