From what I quickly read on a couple of internet sites after getting some the other day, I would go with Winchester's advice and be careful. Apparently the oil which causes an allergic reaction (the rash) affects the vast majority of us; even some who were once immune to it eventually get it and I think some even become immune to it over time. Either way most of us can get it. The oil can last for years, even after the plant dies. It can stay on your shirts, pants, gloves, etc. over the year so wash them after you cut it down. One example I read is if you get it on your hunting jacket and hang it up only to use it a year later, you may get hit again if the oil is still on the jacket. Do a google search to research. I need to go back myself. I think for most of us that there is a sense of urgency of 30 minutes to get it off of your skin after it gets on you in order to avoid a reaction. I cannot remember about washing, but there may have been some warning about not spreading it through a simple washing of the hands. There may have been something about applying rubbing alcohol first. Anyway, that was not much help, I suppose I should have researched it myself before responding.