Black widows are one of the most toxic spiders in the United States. They are very common in the Northern Utah area. You'll be able to identify them by their jet-black appearance and red hourglass on the inside of the abdomen.

Their webs have no patterns on the web and are very strong. If you put a twig through a black widow spider's web, it will stretch and you can hear it break. Black widows spread by hatching and use their web as a hot air balloon. They easily attach to areas all around the house.

They spend most of their time on their web and can even build a web on an area that has just been sprayed with pesticides. Proper identification and frequent free retreatments will help in keeping them outside your property.

Black widows produce a neurotoxin which causes severe cramping in its victim and can be fatal for the young and elderly. Getting rid of these spiders calls for specific treatment protocols and is a job best left to professional pest control contractors.