Urine separation is the single most important factor in getting compost toilets to work effectively. Mixing urine and solids creates anerobic digestion which makes a compost that is smelly, incomplete and unpleasant to empty. After extensive research Free Range Designs have developed highly effective Urine Separators to solve this problem. The Complete Urine diverter covers the entire hole under the toilet seat and is simply screwed in place. The Complete diverter is perfect for compact installations where a continuous ring around the toilet hole is beneficial. The uppermost surface is glossy for easy cleaning. The diverter comes with a metal filter that sits over the outlet hole to prevent items entering and blocking the urine stream - this can be removed for easy cleaning. The tough ABS plastic will last for years and Free Range Designs provide a limited 10 year Guarantee against manufacturing defects (Terms apply). Compostable toilets have a 0% effect on the environment, functioning without water & using natural processes to turn waste into compost-like material. By using our urine separator you can help the environment one trip to the toilet at a time!