I love this product and would't want to be without it. I used to get poison ivy systemically, and would have to have a prescription to get rid of it. I have lots of poison ivy on my property, and am also an avid camper & hiker, so I come in contact with it often. Now, using RhusTox, I may get a few dots of breakout if I get it at all. I have used Rhus Tox for years, and the effectiveness has never diminished. Worth every penny!