How to clean a toothbrush — top tips to sanitize and disinfect

A manual toothbrush head
A manual toothbrush head

(Image credit: Shutterstock)

You might think, I already know how to clean a toothbrush, but in fact there’s a little more to it than rinsing the bristles. A toothbrush is something we all use everyday, and considering it goes in our mouth, cleanliness is paramount.

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That’s why when you notice bacteria building up or the bristles starting to smell, which will happen to even the best electric toothbrushes, it’s important that you take the time out to clean and disinfect it. It’s not very difficult or time-consuming to do this, and it takes just a few household products. Here’s how to clean a toothbrush the right way.

How to clean a toothbrush — Everyday cleaning

1. As soon as you’ve finished brushing your teeth, rinse the bristles for 10-15 seconds under warm running water until there’s no toothpaste residue remaining. If you have an electric toothbrush, remove the head and rinse the inside of the brush head as well by holding it vertically and facing downwards in the running water. Rinse the tip of your handle as well.

2. Gently tap the toothbrush to remove excess water.

3. Wipe the handle clean after each use, especially if you notice toothpaste has trailed down.

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4. Store the toothbrush in an upright position so it can air dry. Do not cover the bristles when storing. If you have an electric toothbrush, store the removed head separately from the handle so both can air-dry effectively.

5. If you store your toothbrush in a holder, make sure the holder is cleaned regularly. Some of these can go in the dishwasher, but if not, use warm soapy water.

Electric toothbrush head being washed under a running tap

(Image credit: Future)

How to disinfect a toothbrush

1. Pour out enough antibacterial mouthwash in a glass or container to submerge the bristles. If you don’t have mouthwash, you can also mix a solution of ½ cup of water with two tablespoons of white vinegar and one teaspoon of baking soda. Be prepared for it to fizz up for a few seconds, then mix it.

2. Soak your toothbrush in the mouthwash solution for 15 minutes (30 minutes for the vinegar solution). Don’t leave it any longer though as it can damage the bristles. If you’re using an electric toothbrush, do not soak the handle in the solution as it’s electrical and, again, this will damage it.

Two electric toothbrush heads being disinfected in mouthwash and water, vinegar and baking soda mix

(Image credit: Future)

3. Once time is up, rinse the soaked toothbrush thoroughly under running warm water.

4. You should be able to wipe or scrub away any other residue on the toothbrush under warm, running water. You can use the abrasive side of the sponge for tough customers.

5. If you have an electric toothbrush and your handle needs a clean, use a damp microfiber cloth to wipe it clean. If there’s stubborn residue, you can also scrub it with warm soapy water and the abrasive side of a sponge prior to this, although check your manual in case it doesn’t recommend this.

6. Leave out to dry. Your toothbrush should now be spotless and looking like new again. If this method has failed to remove the bacteria, it’s time to replace your toothbrush.

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Two clean electric toothbrushes with heads removed sitting on a sink

(Image credit: Future)

How often should I clean my toothbrush?

Cleaning should be done each day after every use. You can sterilize and disinfect your toothbrush as often as you like, but once a week is good practice. Remember, you should also replace your brush head, or manual toothbrush every three to four months.

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