Yeah once ya get him eating the other brands I would recommend waiting another week or 2 before giving him treats again. Also I would recommend either frozen krill or live super worms as they aren't so hard to digest as anything that's freeze dried. Freeze dried foods tend to reduce the nutritional value of what ever it is. While with just freezing foods doesn't reduce it nearly as much. With live food there is no nutritional lose but you do run the risk of getting what ever it's fed to, sick. Granted if they are raised at home it's far less likely to happen, FYI super worms are very easy to raise, breed and feed. There's lots of info out there on YouTube on how to do it. Also super worms are just a larger varient of meal worms.