If there is a need to quickly clean the sewer, spending a minimum of effort and money, it is recommended to use products based on chemical compounds. According to their composition, such agents can be alkaline or acidic. The main active element is the surfactants contained in the product. It is they who interact with fat and lime deposits. Withstanding a certain amount of time after backfilling or pouring a chemical agent into the drain, you need to pour warm water to wash off the softened cork. If the work is done correctly, then if the blockage is small, the system should recover. Products based on chemical compounds are ineffective if the sewer pipes are completely clogged, as evidenced by stagnant water in the drain hole. In such situations, it is better to seek help from a plumber.