About this guide
This guide covers the main categories of rodent trap used in the UK — snap traps, live catch traps, body (spring) traps, and electronic kill traps — how each works, the legal requirements that apply to their use, and which situations they are best suited to. The page supports Apex Pest Control Ltd's rodent control service by helping property owners understand their trapping options before choosing a professional pest control provider.
Trapping is a well-established component of professional rodent control programmes in the UK, used either alongside rodenticide bait or as a standalone method in environments where chemical treatment is not appropriate. The range of trap types available differs significantly in how they work, their target species, and the legal obligations attached to their use.
Snap traps
Snap traps use a spring-loaded bar or jaw to deliver a rapid kill when triggered by a rodent stepping on the pressure plate. They are the most widely used trapping method for both rats and mice, available in consumer and professional designs for both species. Modern professional snap traps — particularly plastic designs — hold calibration better than older wooden designs and are typically deployed within plastic tunnel housings to reduce non-target risk and provide a covered run that encourages rodent entry.
Snap traps work on the principle that brown rats (neophobic) and house mice (neophilic) both travel along wall edges and established runs. A correctly positioned snap trap on a confirmed run will catch rats or mice whether baited or not. Bait (peanut butter, chocolate, or nesting material for mice) improves uptake and reduces the time to first catch. Traps must be checked at least every 24 hours under the Animal Welfare Act 2006.
A single brown rat produces up to 40 droppings per night and travels the same routes repeatedly — placing snap traps directly on confirmed runs consistently outperforms positioning based on sightings alone.
— BPCA Pest Technician Reference Manual, 2023
Body traps (spring traps)
Body traps are spring-powered kill traps approved under the Spring Traps Approval (England) Order 2018. Approved designs include the Fenn Mk 4 and Mk 6 (for rats and rabbits), the Kania 2000, and the DOC 200/250. These traps kill by gripping the body or neck of the animal when it passes through and triggers the mechanism.
Key legal requirements: the Kania 2000 and DOC 200/250 must be set in covered wooden tunnel housings when used in England. All spring traps must only be used for the species specified in the approval order. Spring traps set in the open without an appropriate housing are in breach of the approval conditions and may constitute an animal welfare offence. Body traps are more commonly used in professional and agricultural programmes than in standard residential pest control.
Live catch (cage) traps
Live catch traps capture rodents without killing them. Legal obligations vary by species:
Rats: Brown rats cannot be released once caught. It is an offence under the Wildlife and Countryside Act 1981 (as amended) to release a brown rat or allow it to escape. Live-caught rats must be humanely dispatched on site. Live catch traps for rats must be checked every 12 hours under the Animal Welfare Act 2006.
Grey squirrels: Once caught, grey squirrels cannot be released alive. Grey squirrels are listed under Schedule 9 of the Wildlife and Countryside Act 1981 and the Invasive Alien Species (Enforcement and Permitting) Order 2019 — releasing a live-caught grey squirrel is a criminal offence. They must be humanely dispatched on site.
Mice: House mice can be released, but must be transported at least 1–2 km from the property in suitable habitat. Released at a shorter distance, mice will return within hours given their 3–8 metre home range.
All live catch traps must be checked at a minimum of every 12 hours under the Animal Welfare Act 2006 — more frequently in hot weather when animals are at risk of heat stress and dehydration within a much shorter period. Failure to check at the required interval is an offence of causing unnecessary suffering under the Act.
Electronic kill traps
Electronic kill traps deliver a high-voltage electric shock that causes rapid, humane death. Available for both rats and mice, though mouse-specific designs are more common in consumer products. Professional designs often include connected monitoring — the trap sends a wireless alert when a catch is made, enabling efficient management of large-scale trap deployments in commercial environments.
Electronic traps are preferred in food production, healthcare, and pharmaceutical settings where both chemical residue and the manual handling of carcasses from snap traps are concerns. Their higher capital cost relative to snap traps is justified in high-activity commercial environments where the labour saving on checking outweighs the initial outlay.
Choosing the right trap for the situation
The best trap type depends on the species, the site, and any specific constraints. Snap traps are the default for most rat and mouse control situations — effective, inexpensive, and legal. Electronic traps are preferred where residue and carcass management are concerns. Body traps serve specific agricultural and professional applications. Live catch traps are appropriate where non-lethal removal is required and the handling and release commitment can be maintained.
For any significant rodent infestation, trapping is most effective when combined with a programme of entry point identification and sealing — without which re-infestation from surrounding areas will continue regardless of how many animals are caught.
Frequently Asked Questions
What is the most effective rodent trap?
For most residential rat and mouse situations, snap traps correctly positioned on confirmed travel routes are the most effective and practical option. Electronic kill traps are preferred in commercial food and healthcare settings for residue and welfare reasons. The most effective trap is always one in the right position — a correctly placed snap trap outperforms any other trap type in the wrong location.
Do I need a licence to use rodent traps?
No licence is required for standard snap traps or live catch traps. Body (spring) traps must be approved designs under the Spring Traps Approval (England) Order 2018 and used according to the conditions of that approval — including housing requirements for the Kania 2000 and DOC 200/250. Glue traps are now illegal for public use in England (from 9 April 2024), Wales, and Scotland.
How often do rodent traps need to be checked?
Kill traps (snap traps, body traps, electronic traps) must be checked at least every 24 hours under the Animal Welfare Act 2006. Live catch traps must be checked every 12 hours — more frequently in hot weather. Failure to check live traps at the required interval is an offence of causing unnecessary suffering.
Can I release a rat caught in a live trap?
No. Brown rats cannot lawfully be released once caught. It is an offence under the Wildlife and Countryside Act 1981 to release a brown rat or allow it to escape. Live-caught rats must be humanely dispatched on site.
What is a body trap and how does it differ from a snap trap?
Body traps (spring traps) are approved kill devices under the Spring Traps Approval (England) Order 2018. They kill by gripping the body or neck of the animal passing through the mechanism. Unlike snap traps, some body trap designs (Kania 2000, DOC 200/250) must be set in covered wooden tunnel housings. Body traps are more commonly used in professional and agricultural settings than residential pest control.
Are electronic rodent traps better than snap traps?
Not universally — they are better suited to specific situations. Electronic traps deliver an instant high-voltage kill, produce no chemical residue, and allow no-contact carcass disposal, making them preferred in food production and healthcare. Their higher cost makes snap traps more practical for most residential applications. Both are effective when correctly positioned.
Do traps work without bait?
Yes — a snap trap positioned perpendicular to or along a confirmed rodent run will catch rats or mice travelling the route without bait. Bait increases uptake and reduces time to first catch, but placement on an active travel route is more important than bait choice. A well-baited trap in the wrong location will catch significantly less than an unbaited trap in the right position.