Do you cup feed them? If he absolutely refuses to eat them, just wait for them to pupate and turn into flies. He won't be able to resist the flies!![]()
Biggest avail? could be a little too big, a bit intimidating?![]()
Try "sticking" one to the side of your enclosure and waiting quietly to see what happens.
A lot of times my chams are super excited for feeders when offered that way. Once he eats a couple like that and knows what they are, you can return to bowl feeding.