Roundup doesn't work on poison ivy around these parts. You have to get the stuff specific to poison ivy. I buy it by the gallon!

Also, if you do have poison ivy in your yard, or get exposed to it some other way, there is this stuff called Tec-nu that washes the oil off (it's watered down zinc oxide, I think). You should wash right after you get exposed, because it can spread easily from point to point.

Karen