Mice Pest Control in Welwyn Garden City | Nex Pest Control

Our Outside-In Mice Control Process

Identifying the Entry Points Before Removing the Mice

At Nex Pest Control, our mice control process follows the same fundamental principle as our professional rat control service.

There is little point in removing mice from a property if the openings allowing them inside remain accessible.

Rather than immediately deploying traps or rodenticides, we begin by investigating how mice are entering the building.

Our outside-in approach prioritises identifying structural vulnerabilities, securing accessible entry points and then removing the existing infestation.

This process consists of five stages.

Stage 1 – External Property Investigation and Mouse Entry Point Identification

Finding out how mice are entering your property.

Our investigation begins with the accessible external structure of the building.

Mice are capable of exploiting extremely small openings, including gaps that may initially appear insignificant.

We investigate potential entry points including:

External Brickwork and Mortar Joints

Damaged masonry, missing mortar and small openings within external walls may allow mice to enter concealed building cavities.

Pipework Penetrations

Gaps around water pipes, waste pipes, gas supplies and other services entering the building are common potential access points.

Air Bricks and Ventilation Openings

Damaged or inadequately protected ventilation openings can provide access beneath suspended floors or into wall cavities.

Doors and Thresholds

Poorly fitting external doors, damaged seals and gaps beneath thresholds can provide opportunities for mice to enter.

Foundations and Ground-Level Defects

Small openings around the base of a building can allow mice to access concealed subfloor spaces.

Extensions and Adjoining Structures

Defects around extensions, garages, conservatories and adjoining structures may create additional access routes.

During the investigation, we also look for evidence of mouse activity, including droppings, gnaw marks, nesting materials and established movement routes.

Our objective is to identify the access routes before progressing with treatment.

Stage 2 – FREE Mouse Entry Point Proofing Included

We seal identified mouse entry points up to the size of a golf ball at no additional charge.

This is a key feature of our professional mice control service.

Once suitable entry points have been identified, we prioritise sealing them to prevent additional mice entering the building.

All identified, accessible mouse entry points up to approximately 43 mm in diameter are included within your quoted mice control treatment at no additional charge, provided they can be safely sealed using standard rodent-proofing methods.

This may include suitable openings around:

• External pipework.
• Brickwork and mortar joints.
• Small structural defects.
• Service penetrations.
• Ground-level access points.
• Other accessible external openings.

We use appropriate rodent-resistant materials selected according to the location and construction of the affected area.

Our objective is to create a physical barrier that prevents mice exploiting the same access routes.

What Happens if an Entry Point Is Larger Than a Golf Ball?

Where an opening exceeds approximately 43 mm, additional proofing work may be required.

Larger defects can involve more extensive repairs, additional materials or specialist building work.

Any entry point larger than a golf ball is assessed and quoted separately.

We explain the required work and associated cost before proceeding with additional chargeable proofing.

Why Is Mouse Proofing Included in Our Treatment?

At Nex Pest Control, we consider entry point identification and exclusion to be essential components of effective mice control.

Simply removing mice without addressing how they entered the property leaves the building vulnerable to further infestation.

By including standard mouse proofing within our treatment quotation, we aim to address the underlying cause rather than relying exclusively on trapping or rodenticides.

No additional charge for qualifying entry point proofing. No repeated treatments without investigating the source. A more comprehensive approach to mice control.

Stage 3 – Professional Mouse Removal and Targeted Treatment

Removing mice already present inside the building.

Once the identified entry points have been secured, we progress to controlling the remaining infestation.

At this stage, the property should be better protected against additional mice entering through the access routes already addressed.

Depending on the circumstances, we may use professional trapping equipment or other appropriate rodent control methods.

Treatment selection takes account of:

• The extent of the infestation.
• The location of mouse activity.
• Accessibility of affected areas.
• The presence of children and pets.
• Risks to wildlife and other non-target animals.
• The suitability of available control methods.

Where rodenticides are necessary and appropriate, they are used in accordance with their authorisation, product instructions and relevant professional guidance.

Our objective is to remove the remaining mice efficiently while minimising unnecessary risks.

Stage 4 – Monitoring and Follow-Up Visits

Checking that mouse activity has been successfully controlled.

Where required, follow-up visits allow us to assess the effectiveness of the treatment.

This may involve:

• Checking trapping equipment.
• Monitoring signs of continued mouse activity.
• Reviewing previously identified entry points.
• Investigating any remaining evidence of infestation.
• Recommending further action where necessary.

If mouse activity continues, additional investigation may be required to identify overlooked or inaccessible access routes.

Stage 5 – Long-Term Mouse Prevention

Reducing the likelihood of future infestations.

Once the infestation has been controlled, we provide practical recommendations to help maintain a mouse-resistant property.

These may include:

• Maintaining external building repairs.
• Checking pipework penetrations.
• Protecting vulnerable ventilation openings.
• Improving food storage.
• Reducing accessible food sources.
• Maintaining external doors and thresholds.
• Monitoring previously affected areas.

Our objective is to combine effective removal with structural prevention to reduce the likelihood of recurring mouse infestations.