19/05/2026
Another reminder that rats don’t just “appear” in buildings.
These ones were entering directly from the drainage system after a missing air admittance valve left open access from the sewer into the store room cavity.
Treatment alone would never solve this properly without identifying the actual ingress point. CCTV drainage inspections and thorough proofing remain one of the most important parts of long-term rat control.
If you’re hearing activity in walls, ceilings or storage areas — especially in older buildings — always consider the drains.
Pest Shield Pest Control
North East England
0191 7166647