teaching hens

My girls love the patio but pooping on the couch is not good behavior. How to stop the girls from either using the patio - or pooping on it? Can i teach them to poop somewhere else?

Hey all! Long story short - I recently adopted a stray hen (Mabel), built her a 40sq ft coop and run - and its two levels. There is a ramp that leads to the second floor and she has no problems going up and down the ramp. I adopted three other hens, around a year old (was trying to get ones...