Why Do I See More Spiders in My House in the Fall?

Short answer: You see more spiders in the fall for two reasons. They are fully grown and easier to spot by then, and many are on the move looking for mates and for shelter as the weather shifts. It usually is not that your house was invaded overnight, it is that the spiders that were already around got bigger and more active.

Every fall we get the same question. Someone who barely noticed a spider all summer is suddenly seeing them in the garage, the basement, and the corners of the ceiling. There is a simple explanation, and a few easy things that make a real difference.

They grew up

Most of the spiders you see in fall hatched back in spring and spent the summer small and out of sight. By September and October they have reached full size, so the same spiders you walked past for months are now big enough to catch your eye. More visible does not always mean more of them.

They are on the move

Fall is mating season for a lot of species, so males in particular leave their hiding spots and wander in search of females. That is when they cross a wall, drop from a ceiling, or turn up in the middle of the floor. Cooler nights also nudge some spiders toward the warmer edges of your home, like the garage and basement.

What draws them inside

Spiders go where the food is, and their food is other bugs. If your home has other insects around lights, in the basement, or along the foundation, spiders follow. Control the bugs they eat and you make your home a lot less interesting to them.

• Reduce exterior lighting or switch to bulbs that attract fewer insects
• Knock down webs in corners, eaves, and the garage regularly
• Seal gaps around doors, windows, and the foundation
• Clear clutter in basements, garages, and closets where they like to hide

Most are harmless, a couple deserve respect

The large majority of spiders in an Alabama home are harmless and actually help by eating other pests. There are a couple worth knowing and avoiding, which we break down in which Alabama spiders are dangerous and which are harmless and whether brown recluse spiders are common in Alabama.

The Alabama angle

Our warm fall keeps insect activity going later than it does up north, which means the food supply that keeps spiders around lasts well into the season here. Staying on top of the bugs they eat, and the webs and clutter they use, is what keeps the fall spike in check.

Seeing more spiders than you would like?

Our spider control treats the areas they hide and knocks down the insects that draw them in. Call or text (205) 855-7975.

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Why are there suddenly more spiders in fall?

They reached full size and became easier to see, and many are on the move looking for mates and shelter as the weather shifts. It is usually more visibility and activity, not a sudden invasion.

How do I keep spiders out of the house?

Control the insects they eat, reduce exterior lighting, knock down webs, seal gaps around doors and windows, and clear clutter in basements and garages.

Are the spiders in my house dangerous?

Most are harmless and even helpful. Alabama has a couple worth avoiding, so it is worth learning to recognize the ones that matter.