Indoor spiders are extremely beneficial, as they help to keep other insect populations under control. Nevertheless, indoor spiders, or house spiders, make some people shudder. House spiders resort to biting only if they feel threatened, and the toxicity of spider venom varies from species to species. Many homes have spiders hiding in corners or among books. If they inspire fear in you or your loved ones, the easiest way to kill an indoor spider is crushing it under your feet. Make sure the spider is not venomous before touching it.
- Skill level:
- Moderately Easy
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Things you need
- Vacuum cleaner
- Diatomaceous earth
- Insecticide dust
- Nonresidual insecticide aerosol
- Long-lasting residual insecticide
Use your vacuum cleaner to remove spiders, webs and egg sacs. Concentrate on areas in the house that tend to harbour spiders, such as corners, closets, windowsills, dark areas and behind furniture. Once you finishing vacuuming, remove the vacuum bag. Seal the contents in a plastic bag and deposit it into a rubbish bin outside.
Place diatomaceous earth in the basement, crevices, windowsills and other suspect spaces you find. Once the spiders walk over the diatomaceous earth powder, they will begin leaking fluids. This causes them to dehydrate. and ultimately they die.
Dust insecticides such as Drione Dust, Delta Dust Insecticide and EcoExempt D in crevices, behind power outlets, in cracks in the wall and in any other places with spider activity. These insecticides are effective in indoor spider control.
Use nonresidual aerosol insecticides such as CB-80 Extra and 565 Plus XLO to spray directly on the spiders to kill them. If you want an insecticide with long-lasting residual treatment, use Cy-Kick Aerosol, D-Force HPX or Demon WP.
Tips and warnings
- Reduce clutter in your house, as spiders love spaces that are undisturbed. Focus on cleaning out closets, basement, garage and attic. This will prevent spiders from spinning a web in many places they otherwise could.
- Keep your garden neat and tidy to prevent migration of spiders. Trim shrubs, vines and trees that are touching the house. Remove debris, firewood and rock piles that are touching the foundation or walls of the house.
- Spider-proof your home by installing properly fitting window screen and door sweeps.
- Spiders can accidentally enter your home while hunting their prey. Reduce the chances of attracting night flying insects by installing sodium vapour bulbs at the outside entrances of your home.
- Seal cracks and crevices, as they can become entry points into your home.
- Do not keep food lying around, as it will attract bugs, and spiders will come after the bugs to feed on them.
- If you suspect a spider is a black widow or a brown recluse spider, do not attempt to touch it. A black widow has a red hourglass-shaped mark on its top; a brown recluse has a violin-shaped mark.
- Treat a spider bite immediately with antiseptic to prevent infection. If you think the spider is poisonous, immediately seek medical attention.
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