everything I have read says that it is no problem to spray. I use it all the time, but like you said I try to be careful around my hives. Poison ivy is bad around here also, if I didn't spray I would be covered up with it. I really don't like using chemicals, the only ones I use is 2,4d and roundup. I try to use as little as possible, never had a problem.
No, I've done that very thing a number of times through the years. With poison ivy it's probably a good idea, the one down side is that occasionally what happens when you are spraying a broadleaf killer like 2-4D is that you can end up encouraging the growth of grasses which can choke off entrances worse than broadleaf weeds.
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