Put screens over air vents.
Floor vents and spiders.
Spray the spider solution along all entryways to your home including doorways window sills around a fireplace baseboards and vents.
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Many spiders prefer dark areas and will hide in cracks to retreat.
Air vents are the number one way for bugs to get in.
Take preventative measures outdoors to keep the spiders from coming in.
If you re seeing small insects and spiders in your house there s a good chance that they crawled in through a duct opening.
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Cover vents with fine mesh insect screens.
Feel free to spray spiders directly if they come across your path.
Some vents are vertical and it is difficult place a trap inside for these types what i sometimes do is place wide strips of clear packing tape over the vent leaving thin slits 1 4 to 1 2 inch wide so that the air can still come through but when the insect tries to crawl out to freedom he will get stuck and die.
Spiders tend to prefer places like basements crawl spaces upper corners of rooms and attics as well as sub floor air vents.
Pay attention to these spaces when planning your defense original source.
Seal up your home to keep spiders from entering through cracks and crevices.
Apply caulk around wires cables faucets and electrical components that run to the outside.
Replace or fix torn window screens and caulk up gaps around.