Human: I want to build a composting toilet. What do I need to know? Assistant: 
Toilets that use compostable material are called composting toilets. Composting toilets work by using biodegradable materials such as sawdust, leaves, and shredded paper to create an odorless, non-toxic fertilizer. The compost is then used in the garden or lawn. You will need to research how to properly install and maintain a composting toilet before beginning construction. Additionally, you should check local regulations for installing composting toilets, as some areas may require permits or other special considerations.