Composting toilets are eco-friendly sanitation systems that convert human waste into compost through natural decomposition. They use little to no water, making them ideal for areas with limited water supply. These toilets typically consist of a collection chamber where waste is mixed with carbon-rich materials like sawdust or peat moss to promote aerobic decomposition. The process reduces odors and pathogens, resulting in a nutrient-rich compost that can be safely used in gardening, provided it is properly processed. Composting toilets are popular in off-grid living, camping, and environmentally conscious homes, offering a sustainable alternative to traditional flush toilets.