Why are there spiders in your house? There could be several reasons. If you WANT to attract spiders, keep the following conditions. If you’d like to keep spiders out, then eliminate the following:
1. Exterior doors and windows are not sealed properly.
2. Lighting on the exterior of the building is directly over doorways, hence drawing insects to the structure.
3. Bright lights are used instead of yellow lights.
4.Tree branches overhanging the building.
5. Debris on the exterior is providing harborage for spiders.