I don't know where to turn...

Is there a place to get info on my rights as a neighbor of people who use TruGreen?

Yesterday, a very breezy day in Iowa, the TruGreen truck pulled up. One of the boys in it seemed approachable, so I suggested to him that it wasn't a very good day to spray. He inquired about what I was growing in my yard and said he'd have to ask the other guy about what they could do.

The other guy was rude and inappropriate. I did call the company and they requested the spraying stop, but it was completely done by that time.

Should I just look the other way and not worry?

Thank you.