Hey
@TxRebel or Mark with Rock dust I just put sprinkle in with straw or whatever food I’m feeding them .... Figure it akin to a low salt diet .....
Worms, not sure but those look like earthworms or European Night Crawlers - what kind are they?
Do you have any kelp, alpha, or karagana or neem? If so, you can feed them a few sprinkles - put into soil and then lightly spray mist or better yet mix into some old straw or mower double ground and soaked leaves and then put squeezed leaf matter with grains and dust on one side and cover entire bin with soaked rag or soaked brown cardboard - don’t get too moist but soak and wring cloth or drain cardboard before applying - then cover entire bin with another bigger towel and / or lid .....
Again, what kind of worms do you have?