I guess DH and I have been "lucky". We have stayed quite a few times at sites that are not full service, having to visit the crap station when we left. Not ONCE have we found the area around the poop tube messy. Nor do WE leave it messy.
My job, during this process, is to keep my foot firmly planted on the hose elbow, making sure it stays down IN the poop tube hole.
OMG I just realized something! I walk around and get back in DH's beloved F250 with that shoe still on my foot!
DH uses disposable gloves, and there is also alcohol gel in case there's a glove mishap. He washes out the sewer hose religiously before storing it back in the box where it "lives".
I raised three strapping sons...country boys thru and thru....raised around cows, horses, chickens, geese, ducks, dogs, pigs, bringing frogs and lizards home in their pockets, baby turtles, etc.
After going thru 3 sons worth of dirty diapers, and times that I swear they stood in their bathroom door and just aimed in the general direction, icky stuff just doesn't squick me that much.
They all survived it, now grown men going thru the same ickies I did with their own sons. (I get a kick out of it...thinkin'....packback!)
It's human POO folks! The same stuff you found in your children's diapers. Did you wear gloves and a mask when you changed their diapers? And if you think your children didn't get some of THAT on their hands, you're kiddin' yourself.