Why winter changes rodent behaviour
Cooler nights push rodents to seek warmer, more sheltered environments. Roof voids, subfloors and wall cavities all provide the kind of insulated, undisturbed space rats and mice look for once outdoor conditions become less comfortable.
Simple prevention steps
Trim back vegetation and tree branches touching the roofline, seal any obvious gaps around eaves and vents, store pet food in sealed containers, and keep garden and compost areas tidy and away from the house perimeter.
When to call in professional treatment
If you're hearing scratching in the roof at night, finding droppings, or noticing chewed packaging, it's worth having a proper inspection before the problem grows through the cooler months. Early treatment is generally quicker and less invasive than waiting until activity is well established.