Toilet cleaner, carefully formulated with sodium bicarbonate and sodium lauryl sulfate. Designed to clean the inside of the toilet while flushing. Extremely convenient to use: The product contains three cleaning blocks. Just put one in each time. Put the cleaning block in a special container (it is recommended to use the original container). Replace the next one after using one. Put the container with the cleaning block into the toilet tank and let it sink naturally. Let it sit for about 10 minutes until the cleaning block is completely dissolved and starts working. After each use of the toilet, flush normally to complete the automatic cleaning. Each cleaning block can be used for about 2-3 days, which will vary depending on the amount of water and frequency of use. And it can automatically clean the internal pipes of the toilet to reduce dirt residue. Net content: 120g Keywords: Toilet cleaning Ingredients: Sodium bicarbonate, sodium lauryl sulfate Product size: 6.8*10.5cm Shelf life: 3 years Storage method: Please keep in a cool and shaded place