Add Yahoo as a preferred source to see more of our stories on Google. Darren415 / Getty Images Nothing puts a damper on spending time in your yard like realizing you, your kids, or your pets have ...

Poison ivy, oak, and sumac contain an oil called urushiol that causes an allergic skin rash. These plants can be identified by their leaf structure, though some non-toxic plants look similar. To avoid ...

Poison ivy has three leaves, and the middle leaf has a longer stem. Touching poison ivy causes an allergic reaction due to urushiol oil. Poison oak and poison sumac are related to poison ivy and also ...

Nothing puts a damper on spending time in your yard like realizing you, your kids, or your pets have stumbled into a patch of poison oak. For people (and animals) who are allergic to the oils secreted ...