7 ways to get rid of Poison Ivy and Poison Oak without using harsh and toxic chemical sprays. Listed in order of distance from and contact potential with plant.

Graze a goat there.  Spanish and Angora goats are especially fond of poison ivy.  

Vinegar spray. White vinegar will kill poison ivy, though it might take a few days to notice. Fill your garden sprayer with straight, undiluted white vinegar and take aim at the poison ivy leaves and crowns. Try not to soak the ground, since it will result in inhospitable acidity in the soil. If you want, you can use calcitic lime to neutralize any vinegar in the soil afterwards.

Salt, water, and natural soap spray. Mix 1 gallon of water with 3 lbs of salt until well dissolved, add 1/4 cup of natural dish soap. Spray poison ivy leaves. This solution could also kill other plants in the area, so take care not to over do it.

Gin Spray. Mix 1 oz gin, 1 oz apple cider vinegar, 1 tablespoon baby shampoo, 1 quart water. Spray onto leaves and crown during hot part of the day. Should be dead by the next day.