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School School:Worm: Items to Add to the Bin School
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Items to Add to the Bin
Worms have gizzards and need a small amount of gritty material to help grind up the food waste. A handful of soil added to the bin will work. Before adding the soil, check to make sure that the area that the soil came from was not recently treated with pesticides. An even better source of grit is rock dust. Rock dust is ground up rocks. Many nurseries and garden stores sell bags of rock dust. It is rich in minerals and will help balance the acidity of the bin.

When feeding the worms, it is a good idea to check the overall conditions of the bin. If children do the feeding, you may want to have them record certain bin conditions as a way of both monitoring the bin and teaching them about experimental observation.

Things you may want to add after starting the bin:

More Bedding: You may want to add additional bedding if:
•There is excess moisture in the bin (add DRY bedding not moist).
•There are lots of fruit flies in the bin.
•The existing material is reduced down and you want to continue feeding without harvesting.

Water:
You may need to add additional water if the bedding looks too dry. This usually only occurs in wood bins as the plastic bins retain moisture.

Rock Dust
Rock dust will also discourage fruit flies by reducing the acidity of the vermicompost.

Once again remember to monitor the bin to ensure that overfeeding is not occurring.