Specifications: NET WT: 120g Boxed Shelf life:3Years Feature: 1. Long-term cleaning: Each flush simultaneously cleans the inside of the toilet. Automatically clean the internal pipes of the toilet to reduce dirt residue. 2. Retains fragrance and is comfortable: After use, the air is fresh and the toilet is more pleasant. Helps to suppress odor and keep the toilet fresh. 3. Simple operation: directly put into the water tank, no need to change frequently. 4. Save time: reduce the frequency of scrubbing, and easy daily maintenance. 5. Automatically decompose dirt and reduce cleaning dead corners. 6. Prevent urine scale and scale accumulation, and extend service life. 7. Convenient and labor-saving for daily use, reducing the frequency of scrubbing. How to use: 1. The product contains three cleaning blocks. You only need to put one in each time. 2. Put a cleaning block in a special container (it is recommended to use the original container). After using one, replace the next one. 3. Put the container with the cleaning block into the toilet tank and let it sink naturally. 4. Let it stand for about 10 minutes until the cleaning block is fully dissolved and starts to work. 5. After each use of the toilet, flush normally to complete the automatic cleaning. 6. Each cleaning block can be used for about 2-3 days, which varies slightly depending on the amount of water and frequency of use.