Quoted:
I have a ton of poison ivy growing in my backyard. I've bought and sprayed some of the Round Up Poison Ivy/Heavy Brush Killer, and it hasn't done that good of a job. Some of the ivy died, but a good bit of it still looks healthy. My dad was telling me that the older round up was way stronger than the stuff you can buy in the chain stores now, and I tend to believe him as this stuff seems pretty weak. I even mixed it a little stronger than it said on the bottle.
Are there any other good weed killers that I can get online or at a commercial farm store or something? I have a friend who has a friend or works for Norfolk Southern Railroad, and he gave me some weed killer that they use to spray the tracks off with and it was much much better than round up, totally killing any plant it touched. I want something that will kill of the poison ivy and keep if from coming back for say a season, but I don't want to make the soil so poisoned that plants will never grow there again.
get a couple of goats. end of poison ivy.