Mouse repellent: keep mice out of your house naturally
Updated 22 October 2026 · By the MintGuard team
Quick answer
To keep mice out, block the gaps they use and put a long-lasting scent repellent at each way in. MintGuard's peppermint balls cover one room or entry point each for 30 to 60 days, with no poison or traps.
Mice can squeeze through a gap about the width of a pencil. Most come in during autumn, as the nights turn cold.
| Option | Good for | Watch out for |
|---|---|---|
| MintGuard peppermint balls | Prevention in every room, loft, garage and car | Swap every 30 to 60 days |
| Peppermint spray | Quick refresh | Needs reapplying every few days |
| Plug-in ultrasonic | Easy to set up | Doesn't pass through walls; mixed results |
| Humane traps | Removing a mouse already inside | Release well away from home |
| Poison | Professional control | Risk to pets and wildlife |
How mice get into UK homes
- Gaps around pipes under sinks and behind washing machines
- Air bricks with damaged covers
- Gaps under doors, especially garage doors
- Holes where cables and pipes come through walls
- The eaves and gaps between roof and wall
Where to put mouse repellent
Mice run along walls, not across open floors. Put one MintGuard ball behind the cooker, fridge and washing machine, under the sink, by the boiler, in the airing cupboard and at the loft hatch. In the garage, place balls in corners and near the door.
Make your home less attractive
- Keep food, cereal and pet food in sealed containers
- Wipe up crumbs, especially under the toaster and cooker
- Seal gaps with wire wool and filler (mice can chew through foam)
- Clear clutter in the garage and loft
Do natural mouse repellents work?
Mice rely heavily on smell. Strong scent can make an area unpleasant to them, but only if it's still there. That's why we press MintGuard with castor oil, so it keeps releasing scent for weeks instead of days.
Common questions
What is the best mouse repellent in the UK?
For prevention, a long-lasting scent repellent at every entry point plus proofing gaps. MintGuard is designed for exactly that, with no poison.
What smell do mice hate?
Mice are known to dislike strong scents like peppermint and clove, which is why MintGuard uses both.
Get MintGuard
12 pressed peppermint balls per pack. No poison, no traps. Tracked UK delivery and a 90-day money-back guarantee.
- Tracked UK delivery
- 90-day money-back
- Secure checkout
- What happens next: 1. Pay on our secure checkout · 2. We dispatch your order · 3. You get a tracking email
Written by the MintGuard team
Last checked 22 October 2026. Plain, practical advice for UK homes. For a serious or ongoing infestation, contact your local council pest service or a qualified pest controller. Keep all repellents out of reach of children and pets.
