In some instances you could run a feeder without a collar on a pet. This only works if they are using the only PortionPro Rx in the home or if the pet in question isn’t a threat of food stealing. You would program the feeder as normal, putting it into open mode, and when pairing a tag, you will make the tag unapproved by pressing the minus button during tag pairing (Instructions for this are in the User Manual as well as demonstrated in a video on our YouTube channel). Then simply place the tag more than 3 feet from the feeder or attach it to the collar of another pet in the home.