Hello,
One of the projects I did in the last several days was that I did a "spring cleaning" of sorts on my vermicomposting farm. This is a small compost bin in which worms that eat rotting vegetable matter (red wrigglers are the breed in this case) are allowed to breed and thrive on kitchen scraps. It can be done outdoors all year round in climates that do not get below freezing, or in the basement in cold climates. My worm bin is an
expandable worm tower which really isn't as scary as it sounds.

There are various different styles of bins. The idea with this type is that there are several layers, each with a mesh bottom. As the compostables in the lower layers are completely consumed, the worms migrate upward leaving pure compost in the lower bins to be harvested. Therefore the top tray is always the "working tray" and a new one is added periodically. My bin is about 1 year old and I still only have one layer on top. This is because I screwed up and underfed them at one point and they consumed all the newspaper lining the bottom of their tray, causing the finished compost to fall into the worm tea collection trough underneath. Er... don't ask about worm tea. You don't want to know. At any rate, that means my first harvest of compost came out of there instead of from an actual tray, so I opted to simply clean up the existing tray and put it back on over the emptied trough.

Here's a tray of fresh clean bedding. It lies on top of a layer of newspaper as mentioned above. The bedding itself consists mainly of fiber (shredded paper in this case but it can also be coir fiber, coconut husk shreds or whatever is cheap and available). Mixed in with the shreds is some black soil or other grit for their digestion (and to contribute needed microorganisms). It has to be exactly the right level of dampness. I use a pump sprayer to add water evenly, then mix it and feel it with my hand to make sure it's perfect.

I keep this cookie jar of pre-prepared dirt. It is used potting soil mixed with crushed dead leaves and some dryer lint. The lint is to provide fiber because I also include this mixture when I feed the worms their dead vegetables.

There is also a smaller jar of lint that is just the spare lint for making more dirt mix later.

On the new bedding I place some nice black soil containing my worms. Then when I feed them I scoop a hole in the dirt and bury about a handful of rotten or wilted veggies at a time. There is no odor really, though part of that is being clever about what kind of veggies go in. Broccoli is not suggested! After a few weeks the dirt will have expanded to hide a lot of the bedding. Once the dirt has filled the tray, but before the worms have resorted to eating the newspaper underneath it, I place another new tray on top for them to migrate to and stop putting food in the lower tray. This is the part where I messed up this last time... have to add new tray a lot more quickly next time. LOL

This was my first black dirt harvest... my worms made this and it is incredibly fertile, good for spooning into house plants or indoor grown vegetables. The mixing bowls shown are about medium size.

Here's what one of the trays looks like after the dirt is harvested out of it. It's ready for a good scrubbing with a stiff brush in the utility sink.

All done for now!