It looks like you're new here. If you want to get involved, click one of these buttons!
Hello everyone, I have had a look through these forums and elsewhere online and haven't found a full list of what mealworms can eat. I would be helpful that information to go on.
Things I have been wondering about as an alternative to expensive grain include - wild berries, hay (that could maybe be bedding from an animal such as a rabbit)
Any freely available plant material really. If they are fine with something like wild berries then you can go get a load from some trees and bushes - dry them (so they store better) and away you go.