Why are there suddenly so many spiders in my house?
Online Answer
Having a lot of spiders in your house means that the spiders are finding a regular food supply. Since spiders eat insects, that means that there are insects in your house. If there are enough insects to feed a large spider population, it means that there's a large insect population in your house as well.
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Eucalyptus, tea-tree or even peppermint oils might keep the spiders out. While some might enjoy the smell, the spiders do not. Spray around windows and doors. A similar option is vinegar.
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The story goes that conkers contain a noxious chemical that repels spiders but no-one's ever been able to scientifically prove it. There's hearsay that if a spider gets close to a conker it will curl its legs up and die within one day. Others say spiders will happily crawl over conkers with no ill effects at all.
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Vinegar: Mix equal parts white vinegar and water in a spray bottle and spray it directly onto any spiders you see. Vinegar contains acetic acid which burns the spider upon contact..
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