As the seasons change and temperatures fall, London often experiences a noticeable surge in rodent activity. At Obsidian Environmental Services, our qualified technicians have seen this pattern for decades. As autumn sets in, rats and mice begin seeking warmth, food, and shelter inside homes and commercial properties.
Why Rodents Become More Active in Autumn
Autumn brings several environmental changes that directly influence rodent behaviour.
- Cooler weather pushes rodents indoors in search of heat and protection from the elements.
- Food shortages occur as natural supplies dwindle; crops are harvested, plants die back, and less waste is left outdoors.
- Loss of leafy shelter exposes rodents that typically nest in overgrown areas, forcing them to move closer to buildings and other covered spaces.
Together, these factors create the perfect storm for increased rodent movement and infestations across London.
The Impact on Homes and Businesses
As rodents move indoors, activity spikes in both residential and commercial environments. You may start to hear scratching noises in walls or loft spaces, find droppings in cupboards or storage areas, or notice gnaw marks around skirting boards and cables. For businesses, especially those in hospitality or food service, this can quickly escalate into hygiene risks and potential reputational damage if left unchecked.
Simple Steps to Deter Rodents This Autumn
While professional proofing is the most effective long-term solution, there are several quick actions you can take to make your property less inviting to rodents:
- Keep bin stores clean and sealed to prevent easy food access.
- Dispose of food waste responsibly and avoid leaving pet food or general waste out in the open overnight.
- Inspect entry points; look for gaps under doors, cracks in brickwork, or damaged vents.
- Declutter outdoor areas to reduce potential nesting sites.

Common Signs of Rodent Activity
If you’re unsure whether rodents have entered your property, look out for these tell-tale signs:
- Small, dark droppings around walls, corners, or cupboards.
- Gnaw marks on skirting, packaging, or cables.
- Foul or musky odours, particularly in enclosed spaces.
- Scurrying sounds at night within walls, ceilings, or under floors. Early identification can make all the difference in preventing a small problem from becoming a serious infestation.
Obsidian’s Fast, Effective Rodent Proofing Solutions
With over 65 years of combined rodent-proofing experience, Obsidian provides comprehensive, expert-led solutions to keep your property rodent-free. Our service includes:
- Thorough sealing of access points to deter further intrusion.
- Fast-acting and effective rodenticide baiting along established travel routes.
- Follow-up inspections to ensure long-term success and prevention.
We also offer rodent consultation services, where our specialists provide tailored advice on safeguarding your property. Ideal for proactive homeowners and business owners alike.
Contact Obsidian Pest Control
At Obsidian Environmental, we’ve built our reputation on handling some of the most complex rodent infestations across London. Our qualified pest control experts deliver discreet, professional, and lasting solutions to protect your home or business all year round.
Call us today to arrange your inspection or consultation, and take the first step towards a rodent-free environment this autumn.