Answers:
Are you trying to butcher the plant or trying to smoothness the itching of a impulsive cause by poison ivy? If you want to execute the plant, you can do a few things. Boiling hot river poured at the roots is the best I've found. Kills the roots. Mixing bleach into the hose down works ably, too. I know someone who sprayed a bleach/water solution over the leaves and it kept him from catching it from the heavens (he be incredibly suseptible), but I'm individual going from what he told me. He say it works, but I still caught it from the heavens. Maybe I did it wrong...I don't know.
If you want to contentment the itching, a substitution for calomine lotion is to label a fasten of baking soda and sea and smear it on the unthinking. It won't dance away any faster, but it relieves the itching (This I studious from personal experience).