Are spider crabs dangerous?
Online Answer
Spider crabs are not known to be poisonous. They may sometimes cause gastric upsets and other mild to moderate symptoms when consumed by a person having an allergy to seafood..
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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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Why is it important to kill a spider crab humanely? Because crabs have got such a hard shell, the heat takes a while to permeate. Boiling a crustacean of any kind before killing it completely, is cruel as it takes minutes to die. You'd never cook a fish, or any other kind of meat, alive.
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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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Japanese spider crab gets its name from its resemblance to a spider. It has a rounded body covered with stubby projections and long slim legs. Maximum size of up to 12 feet (3.7 m) across. Body will grow to about 15 inches (37 cm) wide and the animal can weigh up to 44 lbs..
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