UDDT’s separate urine and feces into two distinct, airtight tanks. In the fecal tank, users mix feces with lactic acid bacteria to reduce foul odors and keep conditions as sanitary as possible. When this container is full, they take the feces out of the tank and compost it with worms and wood chips, to keep it dry. After three months, the compost is used to fertilize soils. While this may seem unsanitary, it is a long-term program: the land is not used to grow any food crops for a minimum of ten years after the fecal fertilizer is applied, to ensure the health and safety of the consumers.