And I live within 100 yards from one of my fields. There is really no concern with anything they are spraying with the exception of anything pesticide related. If/when we have to spray for soybean aphids you have to stay out of that field for 48 to 72 hours. That stuff will burn your skin. I have been in fields after spraying them with regular herbicides 10 mins. later and there is no concern. obviously you don't want to be standing in the field as they spray.
I have 1 teen and 3 tween daughters and I have zero concerns for them being in or around a sprayed field.
Also, if a farmer or a spraying service kills any of your lawn or trees, they carry insurance. Speak to them ASAP and take pictures. its their problem, not yours. Accidents happen, drift happens, heck I personally I have had temperature shifts happen that actually lifts and moves the chemical to another field next to it.
If you have other concerns, shoot me a PM.
Don't waste your time looking back, you're not going that way. - Ragnar Lothbrok