The best poison ivy product on the market is called Zanfel. It is a gritty cream that you apply to the affected area and work in with little bit of water -- and then rinse off, like soap. It's amazing at removing the ushriol oil which is what causes the rash. It may take two applications. That's for use after you see the rash.
What I use as a preventative if I think that I may have come in contact with poison ivy is good old Fels Naptha soap. I soap up every inch of skin that could have been exposed to it, rinse and repeat. It has never failed me.
Zanfel can be purchased at any pharmacy and also Walmart. It's pricey -- I'm thinking $35.00 for a tube?
Fels Naptha is easy to come by -- and it's cheap.
Lucy -- I think Burt's Bees IS the company.