Hi Mary Jo
I’m so sorry – I only saw this question just now 🙁
Sometimes, if the worm farm is new, they can just be disturbed from the harvesting and or shipping process, or the too-sterile bedding in a new farm.
It could also be from over feeding. Have you made up the farm with plenty of neutral bedding, and only pocket fed?
Some instructions on my site can be found here:
For COMPOSTING WORMS (For Worm Farms):
Composting Worm Instruction Sheet: https://thewormman.com.au/worm-farming-instructions/
Putting composting worms into the garden: https://thewormman.com.au/compost-worms-in-the-garden/
My Free E-Book, Frequently Asked Questions About Worm Farming, On My Website: https://thewormman.com.au/free-guide-to-worm-farming/
For further resources, check out my website and I also have a you-tube channel:
https://www.youtube.com/channel/UC5xp0Vnet1ObHsaburv_cVA/playlists
Thanks for asking your question – and sorry again that I only saw it today,
Regards
Brian