Short answer: a little, but don’t rely on it.
Mint (especially peppermint) has a strong smell that some pests dislike, so toothpaste with mint can have a mild repellent effect. But toothpaste is diluted and full of other ingredients, so it’s much weaker than real repellents.
What it might help with
- Ants – the scent can disrupt their trails temporarily
- Spiders – may avoid strong minty areas
- Cockroaches – might be deterred slightly, but not reliably
- Rodents – very inconsistent; often doesn’t work
Simple way people try it
- Mix a little mint toothpaste with water
- Apply near entry points (cracks, windows, corners)
- Or leave small dabs where pests appear
Reality check
- The effect is short-lived
- Pests often get used to it
- It won’t solve an infestation
What works better
- Sealing gaps and cracks
- Keeping food sealed and surfaces clean
- Using proper repellents like peppermint oil (more concentrated)
- Traps or professional pest control if needed
If you’re dealing with a specific pest (ants, cockroaches, mice, etc.), tell me which one—I can suggest something that actually works instead of these internet “tricks.”