With 7 dogs I free feed and they are all healthy and none of them over eat. Some eat first thing in the morning and at night and some graze all day. None are food agressive with each other which is important with 7 dogs. They all pretty much go poop in the morning within 20 minutes of my getting up and again after I get off work at night. I might just be lucky because if one was to get over weight I might be in trouble then