Rat & Mouse Control in Bristol & the South West
Last updated: March 2026
Rodents are one of the most common and serious pest problems in UK homes and businesses. Rats and mice breed rapidly, contaminate food, damage property, and carry diseases. If you suspect a rodent problem in the South West, acting quickly is essential. This guide explains how to spot an infestation, what professional treatment involves, and how to keep rodents out for good.
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Signs of a Rodent Infestation
The most obvious sign is droppings. Rat droppings are dark brown and about 10-15mm long, similar in shape to a large grain of rice. Mouse droppings are smaller, around 3-5mm. Other signs include gnaw marks on food packaging, cables, woodwork or pipes, greasy smear marks along walls and skirting boards where rodents travel repeatedly, scratching or scurrying sounds in walls, ceilings or under floors (especially at night), and a strong musty or ammonia-like smell from urine. You may also notice shredded paper, insulation or fabric where rodents have built nests. If you spot any of these signs in your property in the South West, you likely have an active infestation.
Health Risks from Rodents
Rats and mice pose genuine health risks. They carry and transmit diseases including leptospirosis (Weil's disease), salmonella, E. coli, and hantavirus. These are spread through droppings, urine, and contaminated surfaces. Rodents also carry fleas, mites and ticks which can transfer to people and pets. They gnaw constantly to keep their teeth short, which can damage electrical cables and create a fire risk. The Health and Safety Executive estimates that rodent damage to electrical wiring causes a significant number of house fires in the UK each year. For businesses, a rodent infestation can lead to enforcement action, fines, and closure by environmental health officers.
Professional Rodent Control Methods
Professional pest controllers use a combination of methods depending on the situation. Bait stations containing rodenticide are the most common treatment for established infestations. These are placed in strategic locations and are tamper-resistant to protect children and pets. Traps (snap traps, live traps, or electronic traps) may be used where poison is not suitable, such as near food preparation areas. Proofing involves sealing entry points with wire wool, cement, or metal plates to prevent rodents getting in. A thorough pest controller in the South West will combine treatment with proofing to ensure the problem does not return.
Rodent Control Costs in the South West
A standard rodent treatment in the South West costs £80-£200 for a residential property. This usually includes an initial assessment, placement of bait stations or traps, and at least one follow-up visit to check progress and replenish bait. More severe infestations or larger properties may cost £200-£350. Proofing work to seal entry points is charged separately and depends on the number and size of holes, typically £50-£150 for a standard house. Some companies offer combined treatment and proofing packages. Commercial rodent control contracts, which include regular inspections, typically cost £300-£600 per year depending on the size and type of premises.
Preventing Rodents from Returning
Prevention is as important as treatment. Keep food in sealed containers, including pet food and bird seed. Do not leave food waste in open bins. Fix any leaking pipes or taps, as rodents need water daily. Seal gaps around pipes, cables, vents and doors. Mice can squeeze through a gap as small as 6mm, and rats need only 15mm. Keep gardens tidy and avoid leaving piles of wood, rubbish or compost against the house. If you have a compost bin, use a sealed type. Trim back trees and shrubs that touch the building, as rodents use these as bridges. In the South West, many pest controllers offer annual prevention plans that include regular inspections and prompt treatment if problems reappear.
Frequently Asked Questions
How long does rodent treatment take to work?▼
Rodenticide bait typically takes 4-10 days to take effect after ingestion. A full infestation usually requires 2-4 weeks to clear, with 2-3 visits from the pest controller to monitor progress, replenish bait, and confirm the problem is resolved. Very large or well-established infestations may take longer.
Is rodent poison safe around pets?▼
Professional bait stations are designed to be tamper-resistant, meaning children and most pets cannot access the bait inside. However, there is a secondary poisoning risk if a pet eats a poisoned rodent. Inform your pest controller about any pets so they can choose the safest approach. In some cases, traps may be recommended instead of poison.
Can I deal with mice myself?▼
A single mouse can sometimes be caught with a snap trap baited with chocolate or peanut butter. However, if you are seeing regular signs of activity, there are likely many more mice than you realise. Mice breed extremely quickly (a female can have up to 10 litters per year), so a small problem can become a serious infestation within weeks. Professional treatment is recommended for anything beyond a one-off sighting.
Will my landlord pay for pest control?▼
If you are a tenant, your landlord is generally responsible for pest control if the infestation is caused by structural issues such as holes in walls, broken drains or poor property maintenance. If the infestation is caused by the tenant's behaviour (such as poor hygiene or leaving food out), the tenant may be responsible. Check your tenancy agreement and contact your landlord or letting agent as a first step.
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