I don't keep all food out always. Usually it's the main pellets only. Treats when I get up. If I see any mice or rats I won't even leave that. Instead I will feed only a portion- what they can eat in the morning and again in the afternoon. Treats are always by hand and while being called or spoken to.Some of these responses have me wondering....do most people not have food available for their chickens 24/7? Since they have started free ranging, I have noticed a significant down tick in the amount of grain they are consuming, but I do still catch them returning to the run throughout the day to get water and grab a couple bites before heading back out.