1. Corrosion effect, using the effect of strong alkali on the decomposition of oil, hair, vegetable residue, cotton fiber, etc. So that it becomes loose or can be dissolved in water to achieve the dredge effect. 2. Physical action, a large amount of gas will be generated under high temperature, using the pressure generated by the gas to flush the blockage.Specifications: Shape: Granular Capacity:110g Material: Enzyme Package Include: 2 Pipe Dredge Deodorant.