Before leaving earthworms in Vermi beds, partial decomposition of raw materials (cow dung and essential waste), which can take upto 15 to 20 days, is very necessary.
Maintain 30 to 40 percent moisture in composted waste beds until it is ready. Earthworms do not work properly when there is less or too much moisture in the waste.
Never use fresh cow dung in a vermicompost bed. Earthworms die due to excessive heat in fresh dung, so let fresh dung cool for 4 to 5 days before use.
Do not use any kind of pesticides while making earthworm manure.
Earthworms work faster when the pH is neutral (around 7.0), to keep the pH neutral of the waste during vermicomposting, you must add ash to it.