Maggots in worm bin

by Mark Ortego
(Baton Rouge, La)

Maggots in my worm bin

I am trying to start a worm bin. I didn't research but just took off. Put compost manure, dirt, and some leaves in my worm bin.

Dumped a bunch of watermelon rinds in hoping to break down some before I started adding worms.

Man! The BSF maggots took over! So, I made a screen covering for the bed and started seeing the fly's hatch. I would let them out every day and didn't add any more organic material.

Finally, I didn't see any for a week and started adding worms to the bin. It's a 50+ gallon tote by the way.

Everything is going well and the worms seem to be doing ok and I've started to introduce a few potato peelings and cucumber peelings along with some shredded brown paper.

Today I noticed about 3 BSFs come flying out when I took off the lid and found about 3 maggots that I took out.

Any tips on how to prevent further infestation?

Will diatomaceous earth get rid of them or kill them? Will that hurt the earthworms?

Any help would be appreciated.


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Sep 26, 2022
Re: Maggots in my worm farm
by: Stephan

Hello Mark,

Black soldier fly maggots (BSF maggots) can cause serious trouble in a worm bin if not monitored well.

Although like worms they recycle organic materials as well, compost worms just don't like to be in the same bin as BSF maggots and so it's best to prevent them from entering a worm bin and/or remove them as soon as possible once they have entered a worm bin.

I published several articles about the subject of a maggot infestation in worm bins and below I leave two urls to some of the articles that can help you to get on top of the BSF problems in your worm bin.

I trust this will help you and wish you lots of success with your worm farming project.

If you have further questions, please feel free to respond to this message.

Kind regards and God's richest blessings


Stephan Kloppert

Author of "How to start a profitable worm business on a shoestring budget"

Editor of

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