Interesting. I have not studied the uses for R. toxicodendron but just did a little reading. It has also been used as a dye or mordant ... and has a tallow-like quality that has been used in making candles. I can only imagine that burning the candles made from it would cause some severe reactions and problems since people can get ill just from inhaling the smoke of burning plants.
I'm glad to know it has some useful purposes besides making me itch!
