A battle of wills

Me against the chickens (and I'm a bit of a pushover). So far they have laid 6 eggs, 5 eggs and today 4 eggs in the house. I suspect some eggs are still going awol and I still have no idea where. I've been letting them out in the early afternoon and I'm not sure this is late enough. They are cross about it but as they're chickens this doesn't take the form of much more than a lot of irate clucking and treading on each other inside the run. I think I'm not such a pushover that I can't take this kind of pressure. So tomorrow they will be shut in until at least 4pm. They need to know who's boss.