Rodenticides for Mice

The mouse rodenticides here are approved for amateur use. They can be used indoors, such as in kitchens, lofts and cupboards, and directly around building exteriors like sheds or garages. Always read the label, follow the stated placement, and put bait inside a tamper-resistant bait station rather than loose.

Most mouse rodenticides begin to take effect after one or two feeds. You may notice reduced activity within a few days, with full results typically seen in 4-10 days.

These baits are toxic to rodents and must be treated accordingly. Bait must be placed inside a tamper-resistant bait station at all times, never loose, and stations kept out of reach of children, pets and other non-target animals. Follow the label instructions - a locked station reduces the risk but does not remove the need for sensible placement.

Anticoagulant bait works over several days, and a poisoned mouse will usually die out of sight. Search the treated area regularly and remove any carcasses you find.

Always wear gloves. Lift the carcass with tongs rather than by hand and, still wearing your gloves, place it in a plastic bag, seal it, place that inside a second bag and put it in your outdoor bin. This matters because a cat, dog, fox or bird of prey that eats a poisoned rodent can be affected too - that is secondary poisoning, and carcass removal is the main thing that prevents it.

Usually, yes. Snap and electronic traps involve no active substance, carry no secondary risk to pets or wildlife, and leave a carcass you can see and remove rather than one decomposing in a cavity. Proof the entry points first, trap what is already inside, and keep rodenticide for cases where trapping alone has not worked.

Yes, when used inside a bait station and only where the label permits. Check the product details for specific guidance on use in different environments.

Seal the entry points - a mouse gets through a gap of around 5mm, roughly a pencil's width - using wire wool, sealant, door sweeps and air brick covers. Then remove what drew them: food in airtight containers, bins closed, spillages cleared. Leave a trap or two set afterwards so you catch repeat activity early.