Environmental ChampionsProducing no pollution and leaving no footprint SUN-MAR composting toilets are the future for a greener earth. More on the environmental benefits... Sun-Mar Recycles Nutrients SUN-MAR composting toilets evaporate the liquids and odorlessly decompose the remaining waste into an inoffensive fertilising soil. More on how they work... Unrivaled Selection of 21 Models Sun-Mar has a composting toilet for every need. - Electric or non-electric - Waterless or 1 pint flush - Small, medium, or large capacity units More about our units... The Unique Sun-Mar Technology SUN-MAR's unique and superior composting toilet designs are covered by international patents and feature 3 separate independent chambers with Bio-drum for composting, finishing and evaporation. More on Sun-Mar's 3 chamber technology... Certifications & Approvals What you should know before you buy a Composting Toilet NSF Fact Sheet Only Sun-Mar's composting toilets are certified by the National Sanitation Foundation for residential and cottage use Official NSF Listing Capitol Sheds is an Official Sun-Mar Dealer