The anaerobic decomposition process of human feces substrate with a C/N ratio of 14. 6 has failed to produce biogas optimally. In order to produce biogas maximally. the C/N ratio in the substrate should be in the range of 20-30. https://www.bekindtopets.com/save-big-3-Pack-Lace-Trim-Brazilian-Panties-Grey-And-Red-great-buy/