Our chickens just started to lay this week. We had the nesting boxes closed off to prevent them pooping in them. I opened them up yesterday and put golf balls in each one. When I got home from work, there was a egg on the floor of the coop and poop in one of the boxes. I understand it will take some time, but I wanted to see if there was anything else that I should be doing to encourage them to use the boxes. Do they just instinctually do it? Thanks!