Understand where mice leave droppings
Use the mouse droppings guide to understand where signs usually appear and what they may suggest about hidden routes.
Read droppings guide
The first stage is mice treatment. After inspection, we place professional-use bait in suitable areas to reduce current mouse activity inside the property.
We usually carry out treatment over two visits within a three-month period. This gives us time to assess activity, check progress and adjust the approach where needed.
Treatment helps reduce the active mouse population, but it does not automatically change the access conditions that allowed mice to enter or move through the property. Where repeat activity is likely, proofing may be discussed as a separate next step.

The second stage is mouse proofing. Where proofing is appropriate, we inspect the agreed area systematically and seal the suitable mouse access routes identified during the initial proofing phase.
This may include gaps around pipework, skirting boards, wall and floor junctions, kitchen plinths, domestic appliances, bathrooms, utility penetrations, air bricks and other service routes found during inspection.
We quote mouse proofing separately from treatment because it is a different type of work. Completed proofing includes a 1-year guarantee, subject to site conditions and terms. To see how proofing works in practice, read our guide to mouse proofing.
Proofing starts from £350+VAT. The final cost depends on the size of the area being proofed, the number of access points, access conditions and the amount of sealing work required.
Mouse problems often continue because mice can move through hidden routes behind kitchens, cupboards, pipework, skirting boards, bathrooms, floors, risers and service voids.
We look at the pattern of activity and the building layout so the next step is based on access conditions, not just visible droppings.
Where proofing is appropriate, we seal the suitable access routes identified during the initial proofing phase within the agreed area.
This may be a kitchen, flat, house or other defined area. One missed suitable opening can allow mice back into the protected space, so the work needs to be methodical.
Mice often move between rooms and properties through pipework, wall cavities, floor voids, fitted units, risers and service gaps. This is why activity can return after treatment if the access conditions remain unchanged.
Droppings under kitchen units often point to activity along a hidden route rather than one isolated sighting. If you want to understand where droppings usually appear, read our guide on where to find mouse droppings.
To work out whether the problem is still current, read our guide on fresh vs old mouse droppings.
Our technicians place professional-use bait in suitable areas after inspection. We keep placements away from children, pets, bedrooms and main living spaces wherever possible.
We assess each property room by room, so treatment stays focused on the areas where mouse activity and access routes show it is needed.
Call 020 3405 5000 today. Next-day appointments are available across London, subject to availability.
Get a free quoteMouse proofing is not simply filling a few visible holes. Mice are small, resourceful and able to use gaps around pipework, skirting boards, kitchen units, appliances, bathrooms, utility penetrations, air bricks and hidden service routes.
Our mouse proofing service seals the suitable access routes identified during the initial proofing phase within the agreed area. This may be a kitchen, flat, house or other defined part of the property.
The work needs to be systematic because one missed suitable opening can allow mice back into the protected area. Completed proofing includes a 1-year guarantee, subject to site conditions and terms.
You can arrange proofing alongside treatment or within six months of the initial treatment. Where proofing is appropriate, it helps reduce the risk of mice using the same access routes again.
Mice treatment usually has a flat fee. We quote mouse proofing separately because it depends on the area being protected, the number of access routes identified, access conditions, materials and the amount of sealing work required.
Mice treatment starts from £178 + VAT. Mouse proofing usually starts from £350 + VAT. The final proofing quote depends on whether you need kitchen-focused proofing, whole-flat proofing, whole-house proofing or another defined area protected.
Property size, access conditions, fitted units, appliances, pipework, bathrooms, service voids and the number of suitable access routes can all affect the final cost.
Completed proofing work includes a 1-year guarantee, subject to site conditions and terms. Where proofing is appropriate, the aim is to protect the agreed area by sealing the suitable access routes identified during the initial proofing phase.
For a quick starting point, see our prices. If you want to understand what changes the final quote in practice, read our guide to pest control cost in London.
When comparing quotes, check whether they cover treatment only, proofing only or both.
Not always, but one mouse sighting should be taken seriously. Mice usually stay hidden, so seeing one in the open can suggest more activity nearby, especially in flats, terraced houses and buildings with shared voids.
Look for droppings, scratching, gnaw marks, smells, food damage or repeat sightings. These signs can help show whether the problem is limited to one area or whether mice are moving through hidden routes such as pipework, fitted units, risers or floor voids.
If you also find droppings, our guide on how to know if mice are gone can help you work out whether the activity is still current.
Where signs continue, professional treatment and proofing advice are worth considering.
You should usually book professional mouse control if you keep finding droppings, hearing activity in walls, ceilings or fitted units, noticing gnawing or food damage, or seeing mice more than once.
Repeat signs often suggest that mice are using hidden routes rather than simply appearing by chance. In London homes and flats, this can involve pipework, kitchen units, risers, floor voids, skirting-board gaps or shared building routes.
Professional help is also worth arranging if the activity is close to food storage, bedrooms, children’s areas, pets or vulnerable occupants, or if DIY methods have been tried and the problem keeps returning.
Our mice control London service starts with an inspection of the affected areas and likely access points. We then place professional-use bait in suitable locations to reduce current mouse activity inside the property.
The service usually includes advice on what the signs may mean, where mice may be moving and whether proofing should be considered as a separate next step.
We do not include mouse proofing automatically in treatment because it is a different type of work. Where proofing is suitable, we explain the likely scope and quote it separately.
We usually carry out mice treatment over two visits within a three-month period. This gives us time to assess the initial activity, check progress and adjust the treatment approach where needed.
The exact timing can vary depending on the level of activity, property layout, access conditions and whether follow-up signs continue after the first visit.
We quote proofing separately from treatment. If proofing is suitable, we can discuss whether it should be arranged alongside treatment or after the initial treatment phase.
Mice treatment and mouse proofing do different jobs. Treatment reduces current mouse activity inside the property. Proofing helps reduce repeat access by sealing suitable routes mice use to enter or move through the building.
You may need treatment only, proofing only, or both. This depends on the level of activity, where signs are appearing, whether access routes can be identified and whether the property has had repeat mouse problems before.
Where proofing is suitable, we quote it separately from treatment and explain the area being protected. This may be a kitchen, flat, house or another agreed part of the property.
We place professional-use bait in suitable locations after inspection. We keep placements away from children, pets, bedrooms and main living areas wherever possible.
We assess each property individually so treatment stays targeted to the areas where mouse activity and access routes indicate it is needed.
As with any professional rodent treatment, we explain any precautions that apply during the visit and advise you how to reduce access to treated areas where necessary.
Mice treatment usually has a flat fee. We quote mouse proofing separately because it depends on the area being protected, the number of access routes identified, access conditions, materials and the amount of sealing work required.
Mice treatment starts from £178 + VAT. Mouse proofing usually starts from £350 + VAT.
The final proofing quote depends on whether you need kitchen-focused proofing, whole-flat proofing, whole-house proofing or another agreed area protected.
Because treatment and proofing solve different parts of the problem, we quote them separately and explain the options before carrying out proofing work.
Professional help is usually worth arranging when sightings keep happening, droppings return after cleaning, activity appears in a sensitive area such as a kitchen or bedroom, or the source seems to involve a hidden access route or shared void.
You should also arrange help if DIY methods have been tried and the problem keeps returning. Repeat activity often suggests mice are still using gaps around pipework, fitted units, risers, floor voids or neighbouring routes.
Early treatment helps reduce current activity, while proofing advice can help identify whether access routes need to be sealed to reduce repeat problems.
That depends on the tenancy terms, the condition of the property and where the mouse activity appears to be coming from.
In many cases, tenants should report the issue to the landlord or managing agent first, especially when mouse activity may be linked to gaps around pipework, shared voids, damaged building fabric or access routes outside the tenant’s control.
Landlords and managing agents often arrange treatment first to reduce current activity, then review whether proofing is needed to reduce repeat access.
Use these guides to understand droppings, proofing and whether mouse activity is still current after treatment.
Use the mouse droppings guide to understand where signs usually appear and what they may suggest about hidden routes.
Read droppings guideLearn how mouse proofing works, why the agreed area matters and how sealing suitable access routes helps reduce repeat activity.
Read mouse proofing guideUse this guide to understand what to look for after treatment, including fresh signs, repeat droppings and ongoing activity.
Read activity guide