10 Creative Ways to Reuse Your Old Toothbrush (Instead of Throwing It Away)

At Tooronga Family Dentistry in Glen Iris, we often remind patients to replace their toothbrush every three months. But just because your old toothbrush is no longer suitable for cleaning your teeth doesn’t mean it has to go straight into the bin. By giving it a second life, you can reduce waste and help the environment—right from your Glen Iris home.

Here are 10 clever and practical ways to reuse your old toothbrush:

  1. Create artwork with a toothbrush paint-splatter effect
    An old toothbrush makes a great painting tool, especially for textured or splatter designs.

  2. Use it as a gentle face exfoliator
    The soft bristles can help remove dirt and oil from areas prone to congestion. (Just be sure to clean and sanitise it first!)

  3. Give your pets a mini grooming session
    Old toothbrushes are perfect for brushing small pets or sensitive areas around their face and ears.

  4. Support delicate plants
    The handle can act as a small plant stake—ideal for seedlings and indoor plants.

  5. Spot-clean around the house
    Toothbrushes are excellent for cleaning grout, fixtures, tight corners and other hard-to-reach areas.

  6. Relieve an unreachable itch
    The long handle makes it handy for gently scratching under a cast or between shoulder blades.

  7. Scrub dirt off shoes
    They’re perfect for cleaning treads, removing mud, and restoring shine.

  8. Brush your dog’s teeth
    If your dog tolerates it, a soft toothbrush can help maintain their oral health between professional cleanings.

  9. Keep fish tanks sparkling clean
    Use your old toothbrush to remove algae from corners and accessories.

  10. Perfect for hair dye touch-ups
    Whether it’s covering a few greys or tinting eyebrows, an old toothbrush offers precision control.


If you’d like more oral health tips or need advice on choosing the right toothbrush, our Glen Iris dental team is here to help.