How long has Bruce been in the house? If it's more than a month or two, then probably Sophie wasn't done pooping before play. Just because they poop some, it doesn't mean they are done. It's probably why I somewhat limit all that stuff when I take them out. They know they are going out to do their stuff. It allows me to monitor when they poop and pee and also the amount. Sounds silly and strange for me to admit that, however, it allows me to know when they are really done and not distracted by anything else. Sure I play outside, but only after I'm sure they are done.