[InkyPen]

Mealworms are good as an occasional treat - but beware that while they do contain a good dose of protein, there's also a substantial amount of fat!

You shouldn't feed live ones to hammies as mealworms have surprisingly strong jaws and can, erm, fight back. Dried ones work well.

Having had a quick look at the Zoo Med ones, it looks like they come wet (not dried) in a tin, and only keep for a week. As no hamster is going to get through that many in a week, and they're quite expensive, I'd suggest that if you have them in stock anyway for other pets, then your hammy can have a couple as a treat, but otherwise it's just not worthwhile economically given that dried ones are readily available.