Menu

BehaviourLow risk

Why Are Spiders Around My Windows?

Written by PestMan Editorial TeamTechnical review pendingPublished Updated

Quick answer

Spiders gather around windows because that is where their food is. Light from inside the house attracts moths, flies and mosquitoes to windows at night, and web-building spiders set up where insects are concentrated. Window frames also offer sheltered corners and gaps for hiding and attaching webs.

Why this happens

Web-building spiders such as orb weavers, black house spiders and daddy long-legs choose sites with good prey traffic. Lit windows and doors are insect magnets.

Window frames, fly screens and eaves provide protected anchor points and crevices, so spiders can stay out of the weather.

What you may be seeing

  • Webs in the corners of window frames and fly screens.
  • Spiders hiding in gaps around frames during the day.
  • Egg sacs tucked into corners.

What you can do

  • Reduce night-time lighting near windows or draw curtains to reduce insect attraction.
  • Use warmer, yellow-toned outdoor bulbs.
  • Brush or vacuum webs and egg sacs regularly.
  • Repair fly screens and seal gaps around frames.

When professional help may be needed

Most window spiders are harmless and easy to manage. Consider help if you have a large number of webs around the house, or if redbacks or funnel-webs are present near living areas.

Spiders

Eight-legged predators that feed on insects. Most household spiders are harmless and useful, but a few Australian species, such as redbacks and funnel-webs, need to be treated with care.

Guide

How to Pest-Proof Your Home

A practical, room-by-room approach to reducing pests without relying on chemicals: remove what attracts them, close the ways in, and make your property less comfortable for them.

Guide

Common Brisbane Household Pests

A Brisbane-specific overview of the pests residents meet most often, when they are active, and what the subtropical climate, storms, creeks and Queenslander homes mean for pest pressure.

Guide

Pest Prevention Checklist

A printable seasonal checklist of simple, low-cost tasks that reduce pests around Australian homes, with the reason behind each step and extra lists for renters, apartment residents, pet owners and Queenslander owners.

Still have a question?

Ask PestMan. We’ll show you any answers we already have — and if we don’t have one yet, your question helps decide what we answer next.

Sources & further reading

PestMan provides general information only and does not replace licensed pest-management, medical, veterinary or structural advice. Always read and follow product labels. Read our disclaimer.