Effervescent Toilet Bowl Cleaner: Extra-strength toilet bowl cleaner, limescale and urine stains. Suitable for toilets, tanks, urinals and water closets. Prevents Bad Odors: Strong toilet bowl cleaning tablets have useful extra features; they deodorize, neutralize and prevent odors while also providing smart cleaning. Easy to Use: Open the protective film, put the toilet cleaning tablet into the toilet, let it start working. Alternatively, clean and rinse with a brush. You can place the handy toilet cleaning tablet in your toilet once a week for cleaning. Toilet Cleaning Made Easy: Effortlessly removes stubborn limescale and urine scale, underwater deposits, stubborn grime, bad odors, rust and discoloration from toilet bowls and drains. Packaged: Toilet bowl cleaning tablets are 12 pieces for your convenience.