Insights can be gained from History and how sewage treatment in Europe caused Disease. Outhouse solutions range from the old standby, the outhouse, which can be a Fancy Outhouse, a Plain Outhouse, or a Garden Outhouse, to a Composting Toilet such as Cottage Toilets or the Phoenix composting toilet. Both are an indoor version of the outhouse, or the Porta-Potty. Sewage effluent should be used for its nutrient value, growing aquatic plants that can be fed to fish, for instance. For indoor gardening, cleansing methods include Ultraviolet lamps and Bare/Rift frequencies. Lime reduces the odor of outhouses.