OMG, I built my own timberframe home once cutting the timbers on a farm. Several times I'd arrive in the morning to find that cows had dumped all over my beams. What was interesting is that upon inspection because of the way the beams were laid out, the cow, in my analysis, had to actually back up to purposely poop on my beam.
100% with Armanidog raccoons are one of the few animals that purposely chit were they sleep looks similar in size to cat poop but the similarity ends there . Especially if there is a roof covering from rain , you may need to protect with plastic sheeting or tarp ( they’ll crap on top of it )
Coons are one of the few that would go out of their way to do that. They will do it in the woods on downed tree trunks, hay mows in barns, places they frequent. They can climb without problem. And they can travel. I once tracked a travel route 1/2 mile through marshs woods and fields to get from den to corn field. You can tell whats in season too - raspberries, black cherries, sweetcorn. Duke DP traps with a marshmallow at the bottom and some coon lure is one solution. Pet proof, and they can't resist those marshmallows. Box traps work too.
When I was in India some time ago, my host cooked a great meal over a cow chip fire. It produced a nice, even heat with no odor to speak of--of course it was well dried. So I think I'd just thank the critter for the extra BTUs