I'm building a deck that will attach to my Craftsman tractor so I can mount an ATV sprayer. The 2-4-D seems like the way I need to go. Curious, just what does 2-4-D mean? Question: Of the 5 acres to manage, 2 is groomed lawn, (pampered and under irrigation) and 3 is pasture/fields. There are no animals any place on the 5 acres or near by for that matter. Will the 2-4-D work at controlling Poison Ivy? I'm at year 3 at fighting this stuff and so far, through diligence have done a good job with a hand held spot sprayer, (Round Up Poison Ivy, which kills everything.) I want to bring the fight to a whole new level and hope to hear that the 2-4-D will work to eradicate the Poison Ivy. Multiple applications are assumed on my part as this stuff is stubborn but my understanding is that this 2-4-D is a broadleaf control and therefore should (eventually) work on the Ivy. Any thoughts or advice? Thanks in advance.