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pest control in North West London By Mar

Professional Pest Proofing Solutions against Rodents, Insects and Birds

Pest Proofing Your Home:

If you have a pest problem, Call Us to A) deal with the current issue, then

B) to prevent any further infestations

The most effective way to prevent rats, mice, squirrels or pigeons is to pest proof your home to keep rodents out. Rodents are very good climbers, able to scale rough, vertical surfaces and walk along thin cables or pipes. This will be noticeable as they leave smear marks wherever they go. You will need to identify any gaps located higher up the building, on rooftops, not just those near the ground and make sure these are properly protected to block entry.

A large proportion of our rat and mouse jobs at are with flat's, terraced and semi-detached houses. This means that in a lot of these types of dwellings, control just by using rodenticides may be short lived and re-infested in a short space of time .

How long before (or if) the dwelling is reinfested depends on individual circumstances but unless the external access points are found and dealt with then reinfestation is likely. In an ideal world the whole of the building (as well as sewer and utility pipes, cables & conduits) should be inspected for breaches and fixed. As in a lot of cases this is not possible then pest proofing individual rooms from the inside may be the only option.

Rats and Mice can travel long distances undetected through cavity walls, soffits and loft spaces before either coming to an area where they are seen, heard or there is evidence (droppings, smells or damage) is noted. They may be entering a row of terraced houses several properties away from where they are actually appearing. In many cases blocking access points externally is not possible so pest proofing individual houses or rooms is the answer. If an area is boxed off (which is normal in modern bathrooms and kitchens) then holes and gaps around pipes are often left open by builders as they are not seen but which allow access by rodents.

Kitchens, lofts and bathrooms are the rooms with the most utilities in (kitchens have food as well) so these are the rooms in a dwelling that rodents will have easiest access to once they are in the structure of the building.

Mice can get through a 1cm gap. Pest proofing for rodents needs to be carried out by someone who understands rodents & their behaviour.

Proofing your Home or Business:

Air Bricks and Vents – cover these with fine galvanised wire mesh (especially if they are damaged) this is to allow air to circulate but prevent Mice or Rats from entering.


If you can fit a pencil under it, then an adult mouse can too. Fitting bristle (or brush) strips to the bottom of doors prevents entry, especially in older properties where they may have warped over time.

Drains and sewer pipes

Rats have been known to swim up damaged sewer pipes and get round u-bends and into toilets, so get into the habit of keeping toilet seat lids closed. the best solution to this is to install Rat Blockers to the sewer runs. These prevent rats then entering the bathroom or kitchen area. They may even be able to gain access to the loft if there is a soil stack incased. They will also use drain pipes and drainage outlets. Use tightly fitting metal grates or screens to cover drains, especially in basement areas. Regularly check pipe work and ensure any breakage is fixed immediately.

Roof Eaves – fix damaged roofing and use wire mesh to seal any gaps. If you either live/or own a business with adjacent neighbours/businesses, the issue may originally stem from their property but is now effecting yours.


Rodents can squeeze through small gaps under doorways, so fit strips to the bottom of doors as a deterrent. They will also use cat flaps to get in and will enlarge gaps by gnawing to enter homes via integral garages.

Gaps in exterior walls – Holes or small openings (around utility cables or pipe work) need to be filled with stainless steel wire wool and caulking or concrete. Steel or aluminium plating can be used. Rats can jump, so check up to a height of about 4 feet.

Holes – these are often made in exterior walls for cables and pipes, check that old pipework holes are sealed too.

Lawns – keep grass mown short to reduce shelter and seeds for food. Ideally leave a gap between the building foundations and the garden.


Seal holes around existing or new pipes with coarse grade stainless steel wire mesh and pliable sealants.

Roofs – Rats & Squirrels climb along electrical cables or use overhanging branches to get into loft spaces and attics through gaps in broken roof tiles or under eaves. Repair roof damage and use wire mesh to seal gaps.

Vegetation – trim tree branches back from the house and where possible avoid plants growing up the sides of your property. Vines, shrubs or over hanging branches can be used for mice to get onto roofs. Overgrown vegetation close to the walls will offer shelter and potential nesting sites.

Sometimes there is more than one entry point and only by proofing many different areas will a solution be reached.

Any pest proofing for squirrels should be done after the present family of squirrels have been eliminated. If done before then they will cause more damage trying to get back into their home. Unless there are existing holes squirrels coming across a roof will not try to access the loft as they don’t know it’s there. Squirrel infestations are usually dealt with using a combination of a special rodenticide poison and traps.

Prices for pest proofing lofts involving Grey Squirrels start from £180. It depends how high the areas that need work on are. (Proofing for squirrels normally is done externally while rats & mice usually internally.) It also depends on what needs to be done. 

For more information on our Pest Control Solutions please call: 01727 601 007 and speak with one of our friendly team.

If you require a quote for one of our Pest Proofing Services, call us today 01727 601 007

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