Black and Tan Striped (?) Worms (?) in Cricket Container

When switching out cricket containers for cleaning, I noticed tiny black and tan striped maggot-looking things. Probably 1/8" and roaming around on the card board. How do I get rid of these, and what are they?
 
I often find those in large orders of crickets...little hairy things. I just kill the ones I can catch but they don't seem to do any harm.
 
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