How to Clean Dirty Mouthguards with Baking Soda

mouthguard cover

Wearing mouthguards is an excellent way of protecting your teeth when participating in contact sports, but they can become filthy over time.

You’ve probably gotten bacteria on your mouthguard before, whether they picked up germs from the locker room or you accidentally dropped them on the floor.

Fortunately, it is easy to deep clean your mouthguard with baking soda! Just make a baking soda paste by mixing baking soda and water, brush your mouthpiece with the paste then rinse with cold water.

Here’s a step-by-step guide on how to deep clean your mouthguard with baking soda.

Let’s begin!

What You’ll Need:

Dirty mouthguard
Baking soda
Clean brush
Small bowl
Paper towels

mouthguard what you need


1. Give your mouthguard a good rinse. This will help to remove some of the debris and saliva. Just place it under running water for 20-30 seconds.

mouthguard running water

2. Make a paste by mixing 2 tablespoons of baking soda and 1 tablespoon of water in a bowl. 

mouthguard baking soda paste

3. Brush your mouthguard gently with the baking soda paste. Make sure you clean both the inside and outside of the mouthguard to get all the bacteria.

brush mouthguard with paste

4. Rinse your mouthguard with water. Make sure that no traces of the baking soda paste remain.

rinse mouthguard

5. Dry the mouthguard with a clean paper towel. Store in a dry container.

dry mouthguard

Mouthguard Storage Tips

  1. You will want to clean your mouthguard before and after each use. 
  2. Mouthguards should ideally be stored in a container that seals shut to prevent contact with dust and debris.
  3. To avoid fungus build-up on your mouthguards, make sure they’re dry before storing them.

When Is It Time to Replace My Mouthguard?

According to my dentist, you should replace your mouthguard at least once a year. This can be either before or after your season begins.

Mouthguards are not designed to last forever. Over time they lose their thickness and become less effective at protecting your teeth. So remember to replace them when their time is up.


Don’t just throw away your expensive mouth guards. Clean them instead with baking soda.

If you like the information in this article, please check my post on how you can use baking soda to clean and deodorize your flip-flops.

Thanks for dropping by my blog!

-Baking Soda Guy