I've never boarded any of my crew but did need to visit several "cage free" facilities to hand out pet friendly events flyers, I'm not sure what the norm is but thats what I saw too- big rooms full of dogs of every size roaming around.
At one place I watched a very zealous "marker" peeing on every bed and other dogs too
Yes, there was an employee who saw this too and made no move to stop it or clean anything or anyone up.
Not quite the same but something to consider.