Household waste either goes to commercial composting plants (where the methane produced most likely escapes) or to sanitary landfills, where the reduced biological activity means that the scraps degrade at a much slower rate, but do eventually reduce to methane and other lipids, though possibly at the scale of millennia or longer.
Household waste either goes to commercial composting plants (where the methane produced most likely escapes) or to sanitary landfills, where the reduced biological activity means that the scraps degrade at a much slower rate, but do eventually reduce to methane and other lipids, though possibly at the scale of millennia or longer.