I always collect mine and whoever doesn't want theirs.
Be sure the brass you are picking up is your own. I have had lizards picking up my brass while I am shooting. It is not like loosing a couple of 9mm pieces will kill me, but one jerk was picking up .45 super max that I had to hand make one at a time out of 30-06 military brass. Of course the nerd was shooting a .22 rimfire, so it was not like it was an accident.
I always collect mine and whoever doesn't want theirs.
Atterbury requires you to police your own brass. I pick up others as well as go through the buckets. That's is a lot of money saved.