Croton nuts have relatively high nitrogen content comparatively to typical composts and manures. Most potting composts contain a combination of peat and vermiculite or perlite. PFAS are also found in paper mill residuals, digestates, composts, and soils. Ordinary home composts cannot break down the polymer, although high-temperature commercial composting systems can. Also, the university composts or otherwise repurposes all yard waste. The composts are "soil-based". The physical standards of composts includes mainly appearance and odour factors. Immature composts may cause settling and young root disturbance due to oxygen deprivation. The composts of the lipstatin are ultimately from linoleic acid, octanoic acid, and L-leucine. The formulae of these as yet unnamed composts were published in 1938.