IMHO, I reckon the lil' fellas'd love this frozen combo (well thawed at room temp of course!)

By boiling, then freezing, the onions would present no hassles at all. Raw and fresh, onions might slow 'em down some.
My two cents....

Cheers
Jay

It was actually frozen first then boiled. It was a store bought frozen bag of mixed okra, squash, tomatoes & onion.

Thanks.

ANY food waste is fine for worms, no matter the condition, the only thing that's necessary for the worms to take care of it is bacterial decomposition - it's the bacteria and slime they're after, they're not picky vegetarians!!

Bill