Included: 24 Tablets Clean the tank, rim, inner wall, water pipe and other parts of the toiler thoroughly and make your toilet bowl clean and bright Effective in killing bacteria and germs of the toilet and sewer pipe, preventing bacteria from toilet and toilet sewer infected alternately Effective in deodorization, purify the air of the toilet Each tablet lasts up to 1-2 weeks Easy to use: just torn bags, take out 1 cleaner, put in the far end of the tank from water outlet. Please do not tear the water-soluble protective film Product description Product Details: Cleans and deodorizes with every flush Safe for all plumbing and septic tanks Safe for use with bleaches and cleaners How to use: 1. Remove tank cover 2. Pull perforated tab to remove backer card behind tablets 3. Flush toilet and wait until water is at lowest level 4. Do not unwrap film from tablet because film can dissolve in water and protect hands and clothing from stains 5. Drop one tablet into tank near the sidewall, under the float and away from the valve 6. Ensure that tablet does not interfere with toilet mechanism. IMPORTANT: Wait 10 minutes before flushing again. CAUTION: PLEASE STORE IT IN A COOL, DRY PLACE AND KEEP OUT OF THE REACH OF CHILDREN AND PETS