What are the white dots all over the fairway?

foam on 2 fairway

close up of foam

I get this question every time we take our sprayer out to apply fertilizers and herbicides. Our sprayer is equipped to drop little droplets of foam at the end of our sprayer booms. This allows the operator to see where he has applied the products so that he does not go over the same area twice. The foam marker for our sprayer eliminates the need to add dye to our spray solution which can be very messy to apply.