if u wait till its dark, they learn to just stay out. My two hens never want to go into the coop at night. I was stressing about this but then i thought of the plus side; We have no predators because of our game fence, and no worry letting them out in the morning, but they still go into the coop to lay eggs and eat and drink. I still wish they'd go into the coop, I'm working on it. Its a good idea to put them up at about 6:30 with a can of scratch but i didn't raise my hens from chicks so they're less cooperative. all these solutions above are great ideas.