Every time your sink drains, the drain trap or sink trap will hold a little bit of that water. This retained water serves an important purpose for your plumbing system. As the water sits at the bottom of a curved portion of the pipe (aka the sink trap), it helps to prevent sewer gases from entering your home through the drain. Because this pipe is curved, more items than just water can get stuck inside it, which can cause clogs.

Have you ever looked at the back of your bathroom sink and noticed the little hole underneath the faucet or somewhere along the perimeter? This hole is called the overflow hole. It helps to keep your bathroom sink from flooding, but it is easy to forget about this little hole, causing it to get dirty and mucky. If you take a close look, you will probably be able to see gunk inside. To ensure you can rely on your overflow