There are many ways to naturally clear your drains. One of the most common ways is to pour a pot of boiling water down the drain. This will help loosen up any clogs that have built up in the pipes. Another way is to use vinegar and baking soda. Mix a cup of baking soda with a cup of vinegar and pour it down your drain while it's running. The mixture will react with the water and create a foamy mixture that will work to clear your drain.