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How to Get Rid of a Smelly Drain

Lauren Bongers

By Lauren Bongers
Published January 30, 2024

Whether you have a bad smell in the shower drain or in the kitchen sink, you'll want to take care of the issue quickly. Find out common causes of drain odors as well as a few cleaning methods to get rid of the smell.

Skill

Beginner

Time

Few Hours

A clean stainless steel kitchen sink with white strainer baskets.

Common Causes of Drains With Bad Odors

Hair and soam scum on a sink's drain.

There are a few common causes of a smelly drain including the buildup of food particles, hair, grease and soap scum. Over time, if these materials accumulate and sit in a drain, they're bound to create an unpleasant smell. If you have a garbage disposal, it's very common for food scraps to get stuck, unknowingly. When organic materials, like food, hair and water, stay stagnant in a drain, they create a breeding ground for bacterial growth and foul smells. Whether you want to know how to clean the shower drain in your home, or the one in your kitchen, below are a few methods to follow.

Natural Drain Cleaning Methods

A person sprinkling baking soda on a sink drain.

If you'd like to try cleaning your drain with natural ingredients, you have a few options including baking soda, lemon juice, boiling water and vinegar.

1. Boiling Water

A person pouring a pot of boiling hot water into a drain.

One of the simplest ways to tackle a smelly drain is with boiling water. Simply boil hot water on a stove or in an electric kettle and pour the water directly over the drain.

2. Baking Soda, Vinegar and Boiling Water

A person pouring a cup of baking soda down a sink drain.

There are a few ways you can use baking soda to clear a drain. One of the best ways is to combine it with vinegar and hot water. Baking soda is a natural deodorizer and has abrasive qualities that make it ideal for scrubbing. Vinegar is highly acidic, making it great for general cleaning. The combination of baking soda and vinegar together creates a chemical reaction that's ideal for cleaning a foul-smelling drain. To do so, follow the steps below.

  1. Start by pouring boiling water into the drain to break up any hard residue.
  2. Then, pour ½ cup of baking soda into the drain.
  3. Afterwards, pour ½ cup to 1 cup of white cleaning vinegar into the drain.
  4. Allow the mixture to sit for several minutes.
  5. Pour the remaining hot water into the drain to clear the baking soda and vinegar mixture from the drain.

3. Ice Cubes

A silver scoop in a tray of ice in a freezer.

If you have a garbage disposal, you may want to try cleaning your drain with ice. When you pour a cup of ice down the drain and turn the disposal on, the shards of ice can break up film and residue on the blades, cleaning them off and eliminating the odor. Follow these simple steps to safely use ice to clean a disposal.

  1. Check your drain for any kitchen utensils or other large objects.
  2. Fill your sink drain with ice cubes.
  3. Turn your sink faucet to cold and let the water run into the drain.
  4. Turn on the garbage disposal, making sure your hands are away from the blades.
  5. Add more ice to disposal, if necessary, and repeat.

4. Lemon Juice and Baking Soda

A person holding half a lemon dipped in baking soda.

Lemon scent is often used in commercial cleaning products because of its fresh smell. To get the same effect naturally, juice a lemon or use pre-made lemon juice to clean your drain. Paired with baking soda, this can make an excellent deodorizer. Follow these simple steps below.

  1. Use a mixture of ½ cup of lemon juice and ½ cup of baking soda.
  2. Pour the mixture down the drain.
  3. Allow the mixture to sit for an hour, if possible.
  4. Pour boiling water down the drain to clear the mixture.

How to Prevent a Drain From Smelling

There are a few preventative measures you can take to avoid foul-smelling drains in the kitchen sink, bathroom sink and shower. Here are some best practices to follow to avoid a serious odor problem.

Avoid Debris From Entering Drains

A trash bin filled with food scraps.

In the kitchen, consider putting food scraps in a trash can or compost bin (if you have one). This will keep debris from backing up in the drain or garbage disposal of the sink, eventually leading to odor. Never pour cooking oil or grease in the kitchen sink, either. It can harden and stick to the pipes of the drain, creating a serious backup.

In the bathroom, avoid excess hair from shaving or hair brushing to enter the shower or sink drain. An excess of toothpaste or soap are other possible hazards that can back up a drain.

Utilize Drain Screens

A person putting a drain screen on top of a bathtub's drain.

A simple way to avoid debris from entering a drain is to use a drain screen, also known as a drain stainer or hair catcher. These accessories are especially useful in the kitchen sink and shower where large quanities of food scraps or hair can easily enter the drain.

Maintain Your Drains Regularly

A person holding a package of drain sticks above a bathroom sink.

Get ahead of foul odors before they develop. Just as you should regularly clean your toilets and bathroom mirrors, drain maintenance should also be consistent. Use one of the natural methods listed above detailing how to clean a bathroom sink drain or kitchen drain. Otherwise, you can consider purchasing a store-bought drain cleaner.

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