Rodent prevention is one of the most cost-effective things a homeowner or business can do. Treating an established infestation is always more time-consuming and expensive than keeping rodents out in the first place. Here is what our technicians recommend based on years of work across Aberdeen, Dundee, Angus, Perth, and Stirling.

Understand what you are dealing with

Scotland has two main rodent pest species: the brown rat and the house mouse. Brown rats are larger, bolder, and more likely to burrow outdoors before moving inside. House mice are smaller, more agile, and can squeeze through a gap as small as 6mm. Both are capable of causing significant structural damage and contaminating food with urine, droppings, and fur.

Both species breed rapidly. A pair of mice can produce up to 60 offspring per year. A pair of rats can produce over 200. Early action is always more effective than waiting.

Seal entry points

This is the single most effective prevention measure. Walk around the exterior of your property and look for:

• Gaps around pipes and cables entering the building. Pack with wire wool and seal with exterior filler. Rodents will not chew through wire wool.
• Gaps under external doors. A gap of more than 6mm is enough for a mouse. Fit a door brush or threshold seal.
• Damaged air bricks or ventilation grilles. Fit fine wire mesh to maintain ventilation while excluding rodents.
• Gaps in the roofline, eaves, and around chimney stacks. Rats are good climbers and will use these to access loft spaces.
• Cracks in brickwork and damaged pointing. Even small gaps can be exploited by mice.

Remove food and water sources

Rodents need food and water to survive. Removing or securing these makes your property significantly less attractive:

• Store all food, including pet food and bird seed, in sealed containers.
• Keep bins lidded and, where possible, away from the building.
• Do not leave food waste in compost bins that are not rodent-proof.
• Fix leaking pipes and dripping taps. Rodents are drawn to water sources.
• Clear up fallen fruit from trees and bushes promptly.

Reduce harbourage

Rodents need shelter as well as food. Reducing the places they can hide and nest near your property reduces the likelihood of them moving inside:

• Keep woodpiles, garden debris, and compost heaps away from the building.
• Cut back dense vegetation and ivy that touches the building. These provide cover and climbing routes.
• Raise stored items off the floor in sheds and outbuildings to remove nesting sites.
• Check under decking and garden structures for signs of burrowing.

When prevention is not enough

If you have already spotted signs of rodent activity, prevention measures alone will not resolve the problem. Sealing entry points without first eliminating the existing population can trap animals inside the building. A professional survey will identify the extent of the infestation, treat it effectively, and then advise on proofing to prevent re-entry. Pest King offers free no-obligation quotes for residential and commercial properties across North East and Central Scotland.