Our pipe dredging agent contains cocamidopropyl betaine and disodium EDTA. It can remove the odor of the sewer and keep the inner wall of the pipe fresh and fragrant. Its use method is very simple: 1. If the sink is clogged, please drain the water first, and then pour this product into the pipe. 2. Wait a few seconds, the product will automatically bubble and take effect, and then rinse with a lot of hot water. And it quickly dissolves hair, oil, and other hard-to-remove sewer substances.