Predators can eat spiders, even brown recluse spiders, without ill effects. So, even though “daddy-long-legs” aren’t the most “poisonous” arachnid in the world, they are still a very valuable part of the ecosystem.

When you complain about dead bugs on your windshield, be thankful that insects today are considerably smaller than their prehistoric ancestors. Hundreds of millions of years ago, giant insects were common on Earth.

The world’s largest known spider is a male goliath bird-eating spider (Theraphosa blondi) collected by members of the Pablo San Martin Expedition at Rio Cavro, Venezuela in April 1965. It had a record leg-span of 28 cm (11 in) – sufficient to cover a dinner plate.

Remove the existing webs using a vacuum cleaner or a cobweb brush. When you see the spider on the floor or a flat surface, you can use a cardboard or a broom to gently cover it and sweep out of your room.

funnel web

Redback spiders (Latrodectus hasselti) belong to the Family Theridiidae, which is found worldwide. The notorious Black Widow Spider (Latrodectus sp) of the United States is a close relative of the Redback Spider, and only differs in appearance by the absence of a red dorsal stripe.

It’s not condoned nor advised to try and kill a spider (after all, if you miss, you may anger it), but if you really feel this is the only way, then make sure you do it quickly, with a bug spray or a single, accurate hit.

None are especially deadly but known to be painful and responsible for some systemic illness. The Redback is a black widow. There are 42 species of widow spiders – not all of them black. There is a brown one that has been introduced into the USA, whose venom is worse than the black, and a white one in Russia.

Spiders in general get a bad rap, but only a select few of them in the US are actually dangerous. … Remember, a black widow’s venom is meant for their insect meals, not for you. It’s not designed to kill you, or even meant to be used on you in self-defense. Black widow bite fatalities are very rare.

Vinegar is a black widow killer. Vinegar’s acidity will burn a spider’s body on contact. How to make this spider repellent: Combine equal parts vinegar and water, and spray directly on the black widow.

Tall grass and piles of firewood or debris make attractive places to find food, hide, and build webs. Homes that already have an insect issue have the potential to develop a black widow problem.

Bleach has a multitude of uses. It is classified as a pesticide and fungicide due to its ability to kill bacterial cells. These effects are caused by the acid in bleach, which eats away everything in its path. Bleach’s acidity also gives it the ability to kill household pests, including spiders.

Windex

Fill a spray bottle with vinegar, rubbing alcohol or a cleaning agent and use it to kill spiders. Spray spiders from a distance of about 10 inches until they stop moving.

The chlorine fumes from the acidic bleach will destabilize the cell action in the spider’s body and thus poison dangerous spiders such as the black widows and brown recluses. Yes, Clorox will poison black widows as well.

Keep Spiders Away WD-40 is mainly used as a solvent. Just spray some WD-40 on places where spiders and other insects can get in, such as windowsills and door frames. It will keep the spiders and other bugs out.

Stryker 54 Contact Spray – This pyrethrin aerosol spray is used for killing black widow spiders on contact and flushing them out of hiding places.

A team led by molecular biologist Ursula Jakob of Michigan University described a mechanism by which hypochlorite, the active ingredient of household bleach, attacks bacterial proteins, killing the bugs.