Thanks for all the advice. Funny thing is, Rocky is the youngest of our three dogs, but I am positive he is the one doing it. As soon as we get home, he is out the door running to go. And I have observed him when he is outdoors - he will poop multiple times over the course of an hour or two. He is just used to pooping a lot.

I had to leave for an hour tonight so I tried something - I left the TV on. I usually leave it off, but I thought maybe it would make him think I wasn't going to be away long. He was fine, no mess. But then again, it was only an hour.

My next step is a behaviorist, I seriously don't think it is a physical problem, he has always been a frequent pooper. It might be separation anxiety. We'll be trying the senior food too, we really should give it to all three dogs, but they have all been doing so well on regular food.