A can of compressed air, sold under a variety of names and brands, is very useful for cleaning appliances and electrical fixtures. Compressed air can remove particles of food or even help dislodge loose parts from a toaster, for example. Some compressed air cans come with an extension tube that fits in the can's nozzle to precisely direct the air.
If you cannot find canned compressed air at your hardware or home supply store, try a computer shop where it's sold as a dust remover for keyboards and other electronics.
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