I have 2- 23 week old GSL's and 2- 12 week old production reds. NO eggs yet. Anyway, they sleep on a roost in their coop, but they (not sure who) go into the nesting boxes to look around and hang out, messing the shavings all up. Should I block them off? I know the GSL's should be laying by now and I hate to block them off if they are getting ready to lay.