About this guide
This guide covers the best baits for mouse snap traps and live catch traps in the UK, how house mice feed and why this affects bait selection, why placement matters more than bait type for snap traps, and how rodenticide bait differs from trap bait. The page supports Apex Pest Control Ltd's mouse control service by helping property owners improve DIY trap performance before deciding whether professional help is needed.
Mouse bait falls into two categories: trap attractant (food used to draw mice into snap traps or live catch traps) and rodenticide bait (anticoagulant product placed in bait stations as a treatment). These serve different purposes and are selected differently. Most of what is written online about "the best mouse bait" is about trap attractants — and in practice, the type of food used matters far less than where the trap is placed.
How house mice feed
Understanding house mouse feeding behaviour helps explain why bait selection and trap placement work the way they do. House mice (Mus musculus) are neophilic — they actively investigate new objects in their environment, including traps. This makes them significantly easier to trap than brown rats, which are neophobic and may avoid new objects for days.
Mice are nibblers rather than gorgers. They feed at many small food sources across their 3–8 metre home range, consuming small amounts (3–5 grams per day) at each. This is relevant for rodenticide bait: because mice consume small quantities at each visit, a lethal dose of an anticoagulant rodenticide may take multiple feeding visits to accumulate — which is why bait stations must remain adequately stocked throughout the treatment period.
House mice consume only 3–5 grams of food per day but feed at up to 20–30 different points within their home range per night — a feeding pattern that makes bait station placement at multiple points across the active area more effective than concentrated bait at a single location.
— BPCA Pest Technician Reference Manual, 2023
Best trap attractant baits
For snap traps and live catch traps, the most effective attractants are high-fat, high-protein foods with a strong scent:
Peanut butter: The most commonly recommended and consistently effective mouse bait. High in protein and fat, with a strong scent that carries well through the air. Thick in consistency — it requires the mouse to lick and work at the trigger rather than grabbing it cleanly, which increases the chance of the trap firing. Use a pea-sized amount on the trigger.
Chocolate or hazelnut spread: Works similarly to peanut butter. The sugar content may attract mice that are currently feeding on high-sugar food sources in the property (cereals, biscuits). Slightly less thick than peanut butter, which means mice can sometimes remove it without triggering the trap — fix it firmly to the trigger.
Nesting material — cotton wool or tissue: An often-overlooked option that works particularly well on female mice during breeding season. Mice collect soft nesting material and will trigger a trap to reach it. Wrap a small piece tightly around the trigger. This can outperform food-based baits when food is abundant but nesting material is scarce.
Smoked bacon or dried meat: The fat and protein content is attractive to mice. Tie a small piece firmly to the trigger so it cannot be taken without triggering the trap.
Why placement matters more than bait type: a correctly positioned snap trap on an active mouse run will catch mice even without bait, because mice trigger it while travelling the route. An incorrectly positioned trap with excellent bait will catch very little — mice do not cross open floor areas to investigate a scent. Always prioritise placement on confirmed travel routes over bait selection.
What not to use as mouse bait
Cheese is the culturally stereotyped mouse bait but is not particularly effective. Mice prefer high-fat, high-sugar, and high-protein foods over dairy; cheese has a relatively weak scent at room temperature. Hard foods like seeds or dried corn can be pushed off or around the trigger without firing it — if using seeds, mix them with a sticky food like peanut butter to fix them in place.
Rodenticide bait versus trap attractant
Rodenticide bait for use in tamper-resistant bait stations is a separate category from trap attractant. Professional rodenticide products contain anticoagulant compounds in grain, paste, or wax block formulations specifically designed to be palatable to mice. These products must be placed inside sealed, tamper-resistant bait stations — never loose on surfaces.
Since January 2026, outdoor use of second-generation anticoagulant rodenticides (SGARs — including brodifacoum and bromadiolone) requires the pest controller to hold the RSPH Level 2 Award in Rodent Control and be CRRU-registered. Consumer rodenticide products for mice are available without these requirements but are limited to first-generation anticoagulants.
When bait selection does not matter
If an infestation is established, the mouse population will be catching any adequately baited, correctly positioned trap regardless of the specific bait used. At this stage, the limiting factor is the number of traps relative to the population size, the identification and sealing of entry points, and whether the nesting site has been addressed. Switching between bait types on an established infestation makes little difference to the outcome.
Frequently Asked Questions
What is the best bait for a mouse snap trap?
Peanut butter is consistently the most effective trap attractant — high in fat and protein, strongly scented, and thick enough to require the mouse to work at the trigger, improving trap firing. A pea-sized amount on the trigger is sufficient. Hazelnut spread and cotton wool (as nesting material for breeding females) are effective alternatives.
Does cheese work as mouse bait?
Cheese is the culturally traditional mouse bait but is not particularly effective. Mice prefer high-fat and high-protein foods with a strong scent; cheese has a relatively weak scent at room temperature. Peanut butter, hazelnut spread, or smoked bacon will outperform cheese in most situations.
How much bait should I put on a mouse trap?
A pea-sized amount. Over-baiting encourages the mouse to feed carefully at the edge of the bait without triggering the trap. For snap traps, fix the bait firmly to the trigger so it cannot be removed without activating the mechanism. For live traps, position bait at the rear of the chamber so the mouse enters fully past the trigger.
Why is placement more important than bait for mouse traps?
House mice travel along wall edges and do not cross open floor areas to investigate a scent. A correctly positioned trap on an active mouse run will catch mice even without bait, because mice trigger it while travelling the route. An incorrectly positioned trap with excellent bait will catch very little. Always place traps on confirmed travel routes identified by droppings, gnaw marks, or grease smear marks.
Can I use nesting material as mouse bait?
Yes — cotton wool or tissue wrapped tightly around the trigger works well, particularly for female mice during breeding season when nesting material is actively collected. This can outperform food-based baits when food is plentiful in the environment but soft nesting material is scarce.
How often should I replace mouse trap bait?
Replace bait when it dries out, is removed, or when the trap has been set for more than 3–4 days without a catch. Fresh, scented bait is more effective than dried or stale material. After any catch, clean the trap thoroughly before rebaiting, as the scent of a previous mouse can occasionally deter others.
Is rodenticide bait the same as trap attractant?
No. Trap attractant is a food used to draw mice into snap or live traps. Rodenticide bait is an anticoagulant compound in grain, paste, or wax block form placed inside tamper-resistant bait stations as a treatment for the mouse population. They are different products with different purposes. Rodenticide bait must always be used inside a secured, labelled station — never placed loose.