do a walk after to clean up the non broken or slightly broken clays. the ones you dust will easily get broken down. the full and partial clays take a few years to fully go away.
This is a good point; always leave the place cleaner than you found it. I don't know what the rules are up there, but at Pawnee they want you to use only biodegradable clays and targets.
"America is at that awkward stage: It's too late to work within the system, and too early to shoot the bastards."
-Claire Wolfe
"I got a shotgun, rifle, and a four-wheel drive, and a country boy can survive."
-Hank Williams Jr.