10 Surprisingly Useful Things You Can Do With an Old Toothbrush

Most people replace their toothbrush every few months and immediately throw the old one away. Once it’s no longer useful for brushing teeth, it usually ends up in the trash without much thought. But old toothbrushes are actually pretty handy to keep around.

The small brush head and firm bristles make them perfect for cleaning tiny spaces that bigger brushes and rags can’t reach very well. They work especially well for scrubbing corners, grout, jewelry, shoes, and other little spots that collect dirt fast.

It may sound a little odd at first, but plenty of people keep a few old toothbrushes around for quick cleaning jobs and random household tasks. Here are 10 quirky but genuinely useful ways people reuse old toothbrushes instead of throwing them out.

1. Clean Grout Lines

Grout can be difficult to clean, especially in small areas between tiles. An old toothbrush works well here. Mix baking soda with a little water to form a paste, apply it to the grout, and scrub gently to lift dirt and buildup.

How to Make Your Own Homemade Grout Cleaner

2. Clean Jewelry

Toothbrush bristles are great for reaching small crevices in rings, necklaces, and bracelets. Use mild soap or a jewelry cleaner and brush gently to remove dirt from hard-to-reach spots.

3. Scrub Shoe Soles

Mud and grime often get stuck in the grooves of shoe soles. A toothbrush makes it easier to scrub between the treads, especially on sneakers and boots.

4. Clean Small Kitchen Appliances

Old toothbrushes are useful for cleaning crumbs out of toasters, residue around blender blades, or small seams on coffee makers. They help reach places larger tools miss.

Kitchen Appliance Checklist: Your 19 Must-Haves

5. Dust Keyboards and Electronics

Dust and debris collect quickly between keyboard keys. Lightly brushing with a dry toothbrush while tilting the keyboard helps loosen and remove buildup without damaging anything.

Related: 12 Old Electronics That Are Now Considered Vintage

6. Remove Crayon Marks from Walls

For small crayon marks, a toothbrush combined with a mild cleaner or shaving cream can help lift wax without scrubbing too hard. Always test a small area first.

7. Spot-Clean Clothing Stains

When spot-treating stains, a toothbrush allows for controlled scrubbing. Apply stain remover and gently work it into the fabric without rough handling.

8. Clean Faucet Bases and Fixtures

Mineral buildup and grime often collect where faucets meet sinks. A toothbrush makes it easier to clean around handles, joints, and tight edges.

9. Clean Under Fingernails

After gardening or working with dirt, a toothbrush and soap can help clean under nails more effectively than handwashing alone.

10. Scrub Baseboard Crevices

Baseboards gather dust in hard-to-reach corners, making them hard to wipe with a cloth. A toothbrush can gently clean along edges and crevices without scratching surfaces.

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