People looking to purchase a new food disposer may be interested in some tips recently offered.According to Appliances Online, consumers should consider how efficient the sound insulation of the device is, with this tending to increase along with price.People concerned about high noise levels should seek models that feature such things as integrated sound baffles, good insulation and large sound barriers, Infolink Architecture Building reports.In addition, buyers should examine the size of the motor in potential waste disposal units.The article states The bigger the motor, the larger the range of items they can process and the longer the life expectancy. Consumers are also reminded that they will have to choose between standard electric switches and air switches, which are only available with continuous feed models.Able to grind up food into particles small enough to easily pass through a households drainage system, waste disposal units are designed to reduce the amount of rubbish produced.