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When proofing may be needed

When proofing may be needed

Where an entry route is identified, rat proofing may be recommended as a separate service to help reduce recurrence after treatment.

Rat access can involve drains, air bricks, damaged vents, underfloor voids, service gaps, low-level wall defects, garden routes and other openings that allow rats back into the building. In some properties, the issue may also be linked to rats under floorboards or hidden routes that need to be assessed before proofing work is planned.

Proofing is not always the first step during active rat activity. Treatment and monitoring may be needed first to understand where activity is coming from and whether there is a drain, garden, neighbouring property or structural route involved.

For a broader overview of signs, routes, treatment and prevention, see our How to Get Rid of Rats guide.

What our rat control service covers

Inspection

We start by inspecting the property, reviewing the signs of activity and identifying the most likely rat access routes. Where relevant, we consider drains, underfloor voids, garden routes, external defects, air bricks, vents and neighbouring areas.

Treatment

The treatment method depends on where the activity is coming from, how accessible the route is and whether there is a risk of dead rats in hidden areas. Depending on the situation, we may use traps, bait stations or indoor treatment as part of the three-visit service.

Next steps

After treatment has started, we advise whether proofing, drain protection, housekeeping changes or further investigation may be needed. This helps make the next step clear rather than treating every rat problem as the same type of issue.

Common sources of rat activity

Common sources of rat activity

  • Drain-linked access from the sewerage system
  • Missing rodding eye caps or defective inspection points
  • Breaks in main sewer lines or domestic drain pipes that may need further drain-related investigation
  • Rats moving through underfloor voids, suspended floors or concealed structural routes
  • Defects around air bricks, vents and low-level openings
  • Gaps around kitchens, utilities, extensions or service entries
  • Rats moving in from neighbouring land, gardens or surrounding areas
  • Food sources such as rubbish storage, bins, compost or poorly managed external areas
  • Harbourage in overgrown gardens, underfloor voids or concealed parts of the structure

Rat treatment, drains and next steps

Our rat treatment service is a flat fee of £270 + VAT and includes 3 visits at 1–2 week intervals.

The treatment approach depends on where the activity is coming from, how accessible the route is and whether there is a risk of dead rats in hidden areas. For a broader overview of how treatment fits into the full process, see our How to Get Rid of Rats guide.

Where appropriate, we also inspect nearby manholes and advise whether rat proofing, rat blockers for drains or a drain survey, or further investigation may be needed as separate next steps.

In some properties, rat activity is linked to the drainage system rather than to a simple surface-level entry point.

Where accessible, we inspect nearby manholes to look for signs of rat movement. Rats may be travelling through the drains, through defective pipework, through missing rodding eye caps or through damaged inspection points.

If drain-related activity is suspected, treatment may reduce the current activity, but drain protection, repairs or further investigation may be needed to reduce recurrence.

Rat bait stations are often used as part of routine monitoring and prevention, especially around healthcare, food-handling and other higher-risk premises.

They are usually positioned along likely travel routes, boundary lines, external walls, bin stores or service areas where rats may move. Their purpose is not just to hold bait, but to support monitoring, record keeping and early response where activity appears.

Rats under floors are often linked to hidden access routes such as drains, service gaps, broken vents or voids below suspended floors.

The first step is not to block holes blindly, but to identify where the rats are coming from and whether there is a drain, underfloor or external route involved. Blocking the wrong point too early can make activity harder to trace.

If you are hearing noises under floorboards, see our guide to rats under floorboards.

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Next step

Where to go next after rat control

Use these guides to understand the signs, likely routes and next steps after rat activity has been found.

Droppings

Check if the signs are from rats

Use the rat droppings guide to understand size, shape, location and what the signs may suggest about activity or access routes.

Read rat droppings guide
Hidden routes

Understand underfloor rat activity

Rats may use drains, underfloor voids, air bricks, gardens or structural defects. Use this guide if signs suggest hidden access.

Read underfloor guide
Proofing

Plan rat proofing properly

Learn how rat proofing works when routes involve drains, underfloor areas, air bricks, gardens or terraced-house access.

Read rat proofing guide