1. Composition

  • The composition of the food that feed the compost bin must be balanced, heterogenous and diversified, in term of structure and composition. Some nutriment can be harful for the worms or the whole composting system. Food and water must be used to influence five over the six main variables : C/N ratio, pH, moist, air.
  • Carbon materials are often “dry” nutriments, and include cardboard, paper, plan leaves. Nitrogen materials are often “wet” nutriment, and include vegetables and fruits.

2. Disposition

  • Ideally, material to be placed in the compost bin must be alternated depending on their composition. We alternate the layers of nitrogen material with carbon material. Some soil or sand can be mixed with the waste, and a thick layer can be used to cover the food and protect it from insects.
  • Worms doesn’t directly eat the organic waste, but the mildew that grow on decaying organic material. The worms need to wait few days for the food need few days to be ready. Cutting the food into pieces helps that process. Don’t feed the worms too much. When the food quantity is too large for the worms population, mildew can invade the space and make it less comfortable for the worms to live.

3. Harmful food

  • Few organic materials are dangerous or toxic for the worms when deposited in large quantity. Worms food must not include nutriments:
    • 1. Containing animal fat or vegetal oil, e.g meat, milk, eggs, oil.
    • 2. Containing large proportion of salt, e.g. chips.
    • 3. Too acides ou too basic, in large quantity, that would unbalance the pH du système, e.g. lemon, ashes.
    • 4. Chemical products harmful for worms, plants or humans. e.g. detergent, heavy metal inks.

  • Following, you can find a list of the waste to compost or to avoid. Other similar lists can be found on Internet[[#_ftn1|[1]]].