Do horse chestnuts repel spiders?

Online Answer
Putting conkers around the house to deter spiders is an old wives' tale and there's no evidence to suggest it really works. Spiders don't eat conkers or lay eggs in them, so there is no reason why horse chestnut trees would bother to produce spider-repelling chemicals.
Related Questions 📌
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.Aug 30, 2019
No. Conkers contain a poisonous chemical called aesculin. Eating a conker is unlikely to be fatal, but it may make you ill.Sep 25, 2019
When are conkers ready to pick? Conker season is thought to start around August, and lasting through September and October, however, this can be affected by the climate and environmental factors. Conkers are ready when they have fallen from the tree as this is when they've hardened and ripened in the middle.Sep 26, 2020
Put your conker in the oven for one minute and 30 seconds. Take you conker out of the oven and leave on a hard surface until lukewarm. When the conker is cool enough to pick up, ask an adult to pierce a hole in your conker.Oct 5, 2006
Conkers contain a poisonous chemical called aesculin. Eating a conker is unlikely to be fatal, but it may make you ill. They are poisonous to most animals too, including dogs, but some species such as deer and wild boar can eat them.Sep 25, 2019