Not at all.
In fact, this is completely normal.
Torn-up cardboard and egg boxes are less of a worm feast and more of a bedding and balance material. Your worms usually won’t tuck into fresh cardboard straight away — first, the microbes and fungi need to begin softening and breaking it down, and then the worms move in afterwards.
That process can take a little while.
If your other food is disappearing, your worms are active, and there’s no bad smell, soggy conditions, or lots of worms trying to escape… everything sounds just as it should.
There’s no need to remove the egg boxes.
If they’re still sitting there in another couple of weeks, you can always dampen them a little more or tear them into smaller pieces to help things along.
Your worms are happily getting on with business. 🪱
