8 Clever Ways to Clean With an Old Toothbrush

Rachel M.
by Rachel M.

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Don’t toss that old toothbrush just yet!


While it may no longer be effective for keeping your teeth clean, its compact size and firm bristles make it a surprisingly versatile tool for tackling tough grime around the house.


Here are some practical and eco-friendly ways to repurpose your old toothbrush for cleaning.

Old toothbrush - image via Canva

1. Scrubbing grout lines

Tile grout easily accumulates dirt and mildew. An old toothbrush is the perfect size and stiffness for scrubbing those narrow lines. Add a bit of baking soda and vinegar or a specialized grout cleaner, and scrub in small circular motions for best results.

Clean-eez Grout-eez Super Heavy-Duty Grout Cleaner

2. Cleaning faucet and sink crevices

Bathroom and kitchen faucets often have hard-to-reach areas where gunk builds up. Use your toothbrush to clean behind the faucet, around the handles, and in any crevices where grime hides. A dab of dish soap or vinegar can help break down the build-up.

Kitchen faucet - image via Canva

3. Detailing appliances

Whether it's the edge of your microwave door, the crumb tray of your toaster, or the seals around your refrigerator, an old toothbrush can get into those nooks and crannies. It’s particularly handy for scrubbing vents and seams.

Dawn EZ-Squeeze Ultra Dish Soap

4. Polishing jewelry

Delicate jewelry with intricate settings can trap dirt and oils. A soft-bristled toothbrush and a mild soap solution can safely clean rings, earrings, and chains without damaging them. Just be gentle to avoid loosening stones or scratching soft metals.

Cleaning a ring with a toothbrush - image via Canva

5. Keyboard and electronics cleaning

Dust and debris tend to collect between the keys of your keyboard and other small electronic components. Use a dry toothbrush (or very lightly dampened with isopropyl alcohol) to sweep away crumbs, lint, and dirt without damaging the device.

6. Shoe detailing

From the soles to the seams, an old toothbrush is great for cleaning shoes. Use it to remove dirt from treads and polish up scuffed areas.

Washing sneakers - image via Canva

7. Bathroom fixtures and toilet hinges

Toothbrushes can reach under toilet hinges, behind the flush handle, and around base fixtures where grime builds up unnoticed. Use a disinfectant for a deep clean.

Total-Shield Plus Multi-Purpose Disinfectant Spray

8. Window tracks and sliding door rails

These areas are notorious dust traps. Spray a bit of cleaner into the tracks, then scrub the area with your toothbrush to loosen dirt before wiping it away with a cloth or paper towel

Sliding door rail - image via Canva

Final thoughts

Reusing an old toothbrush isn’t just thrifty, it’s also a great way to reduce waste while keeping your home cleaner. Keep a few stashed in your cleaning kit, and you’ll always have the perfect tool for those detailed jobs.


Which cleaning hack did you find the most helpful? Comment down below.

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  • Emmawilliams1 Emmawilliams1 on Jun 19, 2025

    Been doing those/that and more for almost 80 years...............

  • Carrie Stormi Mabry Carrie Stormi Mabry on Jun 19, 2025

    Have saved and used old toothbrushes for all kinds of cleaning. From bathrooms, to kitchens. Use a soft one to clean my jewelry boards in between uses.

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