You'll know if he goes in the crate, they don't mop up the schmutz, there will be residue. If you have the pup on a feeding schedule, his bowels movements will be consistently timed, get him outside and you won't have to worry about him eating it. I taught leave it and was actually successful with my newly adopted 1 year old. He completley lost interest after a couple of months until a course of antibiotics made it interesting again. It is certainly a gag worthy action, but nothing to freak out about.
No beast so fierce
EPI, man aggressive, ball crazy, fearless protector, my heart