spray vinegar on the poison ivy only. or drip it on there. it should kill it, then pull it out with gloves, i'd have to use those tong like grabber things and put them in a bag, i'm so allergic to it!! but that's what i'd do.if ya do it, it' would be better if ya use like apple cider vinegar, it has a higher concentration of acid in it, also you could use this all natural stuff, its from lens page, they get into organic things, and you can find them hanging out in that forum

Mix 1 gallon white vinegar, 1 cup table salt, and 1 tablespoon dishwashing liquid together and spray on weeds. To do so, remove approximately 2 cups of vinegar from the jug, pour in the salt and dishwashing liquid, then return the 2 cups of vinegar to the jug. Close the lid and shake to mix. Transfer to a spray bottle (after shaking to mix the ingredients) as needed. It works as well, if not better, than Chemicals, but is much cheaper. Be careful, it will kill whatever you spray it on!
If you go purchase vinegar, 10% acidity, 20% acid would be better, and spray it on the weeds in the heat of the full sun, you will have an effective weed killer.

or

Here's a homade weed killer if you want to avoid harsh chemicals.

1 tbsp. of apple cider vinegar
1 tbsp. of baby shampoo
1 tbsp. of gin, or listerine mouthwash
1 qt. of warm water

Mix all ingredients in a bucket, and pour into a hand held sprayer. Drench each weed to the point of run-off, taking care not to get any spray on surrounding plants
i'm definately gonna try it!! LOL

Roundup. Again and again until it's dead. If you are worried about your other plants, pour some in a cup and paint it on with a paintbrush or use rubber gloves. My allergic reaction is such that I don't care about the collateral damage.