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
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.

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.
Use these guides to understand the signs, likely routes and next steps after rat activity has been found.
Use the rat droppings guide to understand size, shape, location and what the signs may suggest about activity or access routes.
Read rat droppings guideRats may use drains, underfloor voids, air bricks, gardens or structural defects. Use this guide if signs suggest hidden access.
Read underfloor guideLearn how rat proofing works when routes involve drains, underfloor areas, air bricks, gardens or terraced-house access.
Read rat proofing guide