One of the ways to clear the clogged pipes is by using chemical agents. If you want to use a homemade mixture, you can start by pouring a pot of boiling water down the drain. Now pour about half a cup of baking soda into the drain and allow it to sit for about 5 minutes. Now pour one cup of vinegar and one cup of hot water down the drain. This procedure, in most cases, helps to unclog the drain.