2013/7/24/ · Composting converts horse manure into a clean, high-value product that can be effectively used around the farm or sold for profit while eliminating waste. 1. Send a digital photo, scanned at a minimum of 5″ x 7″, at 300dpi resolution in a jpeg, tif or pdf format to info@equinewellnessmagazine.com, or send a good quality hard copy original photo (not a