Mine used to have free access from the moment they got up to when they went to sleep. That was until I saw mice in my shed. I've laid bait for the mice and not seen any evidence since but I now cap the feeder at night so the little buggers can't get at it. This is the type of feeder and drinker that I use http://www.ebay.com.au/itm/DINE-a-C...pt=AU_Pet_Supplies&hash=item20c539e52b&_uhb=1