I live in an area where we have municipal composting, so it's quite common that every house has two composting bins: a tall green one (about a meter tall), and a smaller, pail-like one. They pick up compost bins every week. (It becomes landfill material.)
I understand that it's possible to purchase compost liners; but I'm not looking to spend more money, since composting is such a regular activity. What are some free, natural materials I can use to line my compost bins with?
I would also like to minimize the need of washing the compost bins. So for now, I'm trying to line them with newspaper; but this still necessitates putting compostable material inside a plastic bag, and transferring it the night before pickup. Is there a better approach?