Poison Ivy/Oak allergic reactions result from exposure to urushiol oil, which is found in these plants. Lawnmowers and trimmers can increase the potential for exposure by making the substance airborne. Contact with these plants can result in rashes that could take at least three weeks to heal completely. Make sure to be prepared for instances of allergic reactions to Poison Ivy/Oak. Choose the best first aid treatment from Setons range of options today.