There are three very poisonous dangerous spiders in the United States. They are the Brown Recluse Spider, the Black Widow Spider, and the Hobo Spider. There are also some species of spiders in the USA that are not as often seen but they are toxic with a painful bite. They are the Mouse Spider, the Black House Spider and the Wolf Spider.But even though these species are not as poisonous or deadly as the most poisonous ones you should still go to the Emergency Room if you are bitten by one. Many people with allergies can have a bad reaction to almost any spider bite. If you can safely catch or kill the spider that delivered the bite to you take it with you to the Emergency Room. Use a jar with a lid to catch a spider to safely transport it to the Emergency Room. But only do this if you can do it safely. Don't risk getting another bite.

The Brown Recluse Spider is one of the most deadly in the United States. Its bite can be very destructive to human flesh. See the photos above of what a Brown Recluse Spider Bite can do to you.Its venom is highly toxic to human flesh and as you can see in the above photos what a Brown Recluse Spider bite can do.

The Brown Recluse Spider hides in dark places. It can be found hiding in peoples attics where bites can occur. You should also use extreme care around piles of wood which is another favorite hiding place of the spider. You should also know that the Brown Recluse Spider is also known in some areas of the country as the violin or fiddleback spider because of the marking on its back. Keep in mind that the Brown Recluse Spider hides until it is to late and has already given you a toxic bite so use care where they are known to dwell. If you must work with a outdoor wood pile tuck your pants in your boots and wear gloves.

The Hobo Spider is found in the Pacific Northwest of the United States and is often confused with the more common house spider that does look similar to the Hobo Spider. The Hobo Spider is a Funnel Web Spider and their nests are easy to identify outdoors. The Hobo Spider constructs the Funnel Shape Web and it waits at the bottom of the funnel for its prey. The spider is aggressive but it will usually avoid humans. Bites by this spider usually occur when the spider is mashed. Shake out shoes and boots before putting them on if you suspect there could be Hobo Spiders in your area. This spiders bite is painful and its venom can cause tissue death at the bite site.

There are three distinct species of the Black Widow Spider in the United States and all three are poisonous. There is the Southern Black Widow, the Western Black Widow and the Northern Black Widow. And you should know that while these spiders are not large at all their venom is very dangerous to humans. Several hundred people have been killed in the United States since 1950 when records of death by Black Widow Spider Bite started to be kept. This spider should be approached with extreme caution. It is more aggressive than other spiders. If you are bitten go straight to the Emergency Room and tell them you suspect it is a Black Widow Spider Bite. If your outdoor area is infected with Black Widow Spiders they are easy to take care of. Spray down all the suspected area with soapy water to get rid of the spiders. Use caution with outdoor Mail Boxes. This spider loves to nest in Mail Boxes.