Kinda interesting, I was out BBQing tonight on our front lawn, and low and behold, some plane that looks exactly like an A500 zooms about 100' over my head.

It came back a few min later doing the same thing. The next pass got a closer look, I was ready this time, and it looks like Grand Forks mosquito control is using them to disperse their chemicals. Kinda interesting, hes been flying around all evening, trying to get a picture of him, but its tuff. What a job, fly around an A500 right above the tree tops, avoiding light poles, parking garages, etc.
Not sure what it could be, I spose it could be an A500 but it seems pretty expensive for just mosquito control.....