Let's say you own 6 hens (enough for several dozen eggs per week) and you have a good watering and feeding setup. On average you might feed and water twice a week and spend an hours or so every 10 days to 2 weeks raking out the coop. Walk-In coops are easier to rake out for obvious reasons... they're more accessible. If your chickens free range in the daytime, you will both feed less and have to clean out the coop less.