Which kind of garbage is not converted into compost by the redworms?

Redworms, also known as red wigglers or Eisenia fetida, are commonly used in vermicomposting to break down organic waste into nutrient-rich compost. While redworms are efficient at decomposing many types of organic waste, there are certain kinds of garbage that they may not readily consume or decompose. These include:

1. Inorganic Materials: Redworms are unable to digest inorganic materials such as plastic, glass, metal, and synthetic materials. These materials should be removed from the composting process as they can harm the worms and contaminate the compost.

2. Large or Woody Materials: Redworms are most effective at breaking down small, soft organic materials. Large or woody materials such as branches, twigs, and large pieces of fruit or vegetable peels may take longer to decompose and may not be suitable for vermicomposting without pre-processing such as chopping or shredding.

3. Highly Acidic or Toxic Materials: Redworms are sensitive to highly acidic or toxic materials. Certain types of waste, such as citrus fruits, onions, garlic, and spicy foods, may contain compounds that are harmful to the worms or create an unfavorable environment for composting.

4. Pet Waste: Redworms are not recommended for composting pet waste such as dog or cat feces, as these materials can contain pathogens that may be harmful to humans and the environment. It is best to avoid adding pet waste to vermicompost bins to minimize the risk of contamination.

5. Diseased Plants: Redworms may avoid consuming plants that are diseased or infested with pests, as these materials may contain pathogens or toxins that could harm the worms or affect the quality of the compost.

Overall, while redworms are highly efficient at composting many types of organic waste, it is important to be selective about the materials added to vermicompost bins to ensure optimal conditions for the worms and produce high-quality compost. Avoiding materials that redworms cannot readily decompose will help maintain a healthy and productive vermicomposting system.