• Home
  • Main Site
  • Contact Us
Prokill UK
Menu
  • Home
  • Main Site
  • Contact Us
Home  /  Blog  /  Preparing for Autumn: Common Pests to Watch Out for in September in the UK
02 September 2025

Preparing for Autumn: Common Pests to Watch Out for in September in the UK

Written by Kate King
Blog wasps Leave a Comment

As summer gives way to autumn, the change in weather brings with it a shift in pest activity. In the UK, September marks the beginning of a period where certain pests become more active indoors as they seek shelter from the cooling temperatures. For both homeowners and business owners, understanding the most common pests during this time and knowing how to deal with them is essential for maintaining a pest-free environment. Here’s a guide to the pests you should be aware of throughout September and as autumn approaches.

1. Spiders
As temperatures drop, spiders begin to move indoors in search of warmth and a steady food supply. While most spiders in the UK are harmless, their presence can be unsettling, especially for those with arachnophobia. The common house spider and the giant house spider are particularly active during this time, often found in basements, attics, and corners of rooms.

Prevention Tips:
Seal Cracks and Gaps: Ensure that windows, doors, and walls are properly sealed to prevent spiders from entering.
Reduce Clutter: Spiders are attracted to clutter, so keeping your home or business tidy can help reduce hiding spots.
Use Natural Repellents: Consider using natural deterrents like peppermint oil or vinegar spray in areas where spiders are commonly seen, or conkers on the window sill and by the doors.

2. Rodents
As the weather cools, rodents such as rats and mice start seeking warm indoor environments to nest and find food. This makes September a critical time to secure your property against these pests. Rodents can cause significant damage to property by gnawing on wires, insulation, and other materials, and they pose serious health risks through the diseases they carry.

Prevention Tips:
Secure Food Sources: Store food in rodent-proof containers and keep kitchens and pantries clean.
Inspect for Entry Points: Regularly inspect your property for small holes or gaps and seal them to prevent rodent entry.
Eliminate Outdoor Shelter: Keep outdoor areas clear of debris, woodpiles, and overgrown vegetation where rodents might nest.

3. Cluster Flies
Cluster flies, also known as attic flies, are a common autumn pest in the UK. These flies are not harmful but can be a nuisance as they gather in large numbers in attics, lofts, and wall cavities to hibernate over winter. On warm autumn days, you might see them clustering on sunny sides of buildings.

Prevention Tips:
Seal Entry Points: Ensure that windows, vents, and eaves are properly sealed to prevent flies from entering.
Vacuum Regularly: If you notice cluster flies inside your property, vacuuming them up is an effective way to remove them.
Consider Professional Help: If you have a significant infestation, contacting a pest control professional can help manage the problem before it worsens.

5. Fleas
Fleas remain a concern in September, particularly in homes with pets. The cooler weather can trigger fleas to seek warmth indoors, where they can quickly become a problem. Flea bites can cause itching and discomfort for both pets and humans, and infestations can be challenging to eliminate without professional help.

Prevention Tips:
Regular Pet Treatment: Continue treating pets with flea prevention products recommended by your vet.
Vacuum Frequently: Regular vacuuming helps remove flea eggs and larvae from carpets and furniture.
Wash Bedding: Regularly wash pet bedding, as well as your own, in hot water to kill any fleas and their eggs.

September marks a transitional period where pests begin to seek shelter from the cooler weather, often inside homes and businesses. Being proactive in pest prevention during this time is key to avoiding infestations as autumn sets in. Whether you’re dealing with spiders, rodents, or cluster flies, taking the necessary steps to secure your property can help keep these pests at bay.

If you encounter any of these pests or suspect an infestation, don’t hesitate to get in touch and contact us for help and advice.

Share On
Share on Facebook
Share on Twitter
Kate King

 Previous Article What to do when your bins are full of flies…
Next Article   Signs of a rodent infestation

Related Posts

  • have wasps in your loft but no nest

    Why do you have wasps in your loft but no nest?

    June 29, 2026
  • How to deal with Wasps

    How to deal with wasps

    June 15, 2026
  • Wasps in a cafe

    When are wasps most active?

    May 12, 2026
  • The Top Pests to Watch Out For in August

    August 1, 2025

Leave a Reply

Cancel reply

Search

Categories

  • ants
  • Blog
  • cockroaches
  • flies
  • Mice
  • Rats
  • Rodents

Search

Business

  • ants (3)
  • Blog (193)
  • cockroaches (5)
  • flies (2)
  • Mice (1)
  • Rats (1)
  • Rodents (1)

Recent Posts

  • Why do you have wasps in your loft but no nest? June 29, 2026
  • The problem with house flies June 20, 2026
  • How to deal with wasps June 15, 2026
  • What is the best environmentally friendly pest control? June 8, 2026
  • How To Get Rid Of Seagulls June 1, 2026

Recent Comments

  • How to keep your business premises pest-free during lockdown - Prokill UK on Autumn pests – what to look out for….
  • Abbey Mackie on Why do you have wasps in your loft but no nest?
  • Román Díaz on Why do you have wasps in your loft but no nest?
  • Penny on Rats are creatures of habit
  • Alex M on Rats are creatures of habit

Archives

  • June 2026
  • May 2026
  • April 2026
  • March 2026
  • February 2026
  • January 2026
  • November 2025
  • October 2025
  • September 2025
  • August 2025
  • July 2025
  • May 2025
  • April 2025
  • February 2025
  • January 2025
  • December 2024
  • October 2024
  • September 2024
  • April 2024
  • March 2024
  • December 2023
  • October 2023
  • August 2023
  • July 2023
  • March 2023
  • January 2023
  • December 2022
  • November 2022
  • August 2022
  • July 2022
  • March 2022
  • February 2022
  • August 2021
  • July 2021
  • June 2021
  • May 2021
  • April 2021
  • March 2021
  • February 2021
  • January 2021
  • December 2020
  • November 2020
  • October 2020
  • September 2020
  • August 2020
  • April 2020
  • March 2020
  • February 2020
  • January 2020
  • December 2019
  • November 2019
  • October 2019
  • September 2019
  • August 2019
  • July 2019
  • June 2019
  • May 2019
  • March 2019
  • February 2019
  • January 2019
  • December 2018
  • November 2018
  • September 2018
  • August 2018
  • July 2018
  • June 2018
  • May 2018
  • April 2018
  • March 2018
  • February 2018
  • January 2018
  • December 2017
  • October 2017
  • September 2017
  • June 2016


Live In Southern Ireland? Visit Prokill IE

  • www.prokill.co.uk www.prokill.co.uk