Sun-Mar Compost Sure Peat Moss and Hemp Mix 8 Pound, 1 Bag. Compost Sure is composed of hemp and peat moss which will decompose quickly. Compost Sure Green is the ideal bulking material for your Sun-Mar waterless toilet. The mix of coarse peat moss and chopped hemp stalk is specially formulated to hold oxygen and moisture in the compost ensuring maximum aeration while keeping the compost well supplied with carbon. Designed for use in waterless Sun-Mar composting toilet systems and Sun-Mar home composters. Ensures good porosity for easy drainage. Holds moisture in to maintain moisture content in compost. Accelerates the composting process and maximizes aeration. 100% Natural product. Use: Add your bulking material at a rate of 1 cup per bowel movement. Alternatively, it can be added at a rate of 1 cup per person per day.