Pet owners are usually directed to place used litter into plastic bags that are subsequently sent to landfills. One writer advocates a different approach: composting pet waste. Juniper Tarascio, writing for Metro Van Couver’s Zero Waste Challenge says that after being composted for 18 months, the pathogens that occur in cat waste are eliminated. The article describes the composting processes and suggests uses for the resultant loam. You can learn more here.