I live not too far from there. It's probably the canadian geese crapping everywhere. They have been flying alot around here and the weather has them
thrown off as well. We actually just had a whole flock fall dead out of the sky not too long ago here. Our local sledding hills on state land were
covered with dead geese. The DNR (department of natural resources) was notified but haven't heard anything yet. Also what was on that video looks
just like the goose crap that is all over the golf courses around here. The cart paths look just like that driveway in the video.