Dùng vỏ quả họ cam quýt. Sử dụng muối nở và giấm. Rửa máy hủy rác bằng một ít thuốc tẩy. Sử dụng hàn the.

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A great natural way to freshen up your garbage disposal and leave your kitchen smelling great is to grind up a handful of citrus peels. Any citrus fruit will do -- orange, lemon, grapefruit, lime. The citric acid in the peels will clean the blades and eliminate odors. Afterwards, add some spice, rosemary oil, or lavender oil for an even fresher scent. Baking soda and vinegar make a great odor-busting combo. Sprinkle half a cup of baking soda into the drain, then gently pour a cup of white vinegar on top. The mixture will fizzle and bubble. Let it sit for 5 to 10 minutes, then rinse it down with very hot or boiling water, with the garbage disposal running. Bleach is very effective at killing germs and will quickly freshen up your drain., however you don't want to use too much of it as it can also harden any grease in your disposal unit, making it difficult to remove.  Dilute a tablespoon of liquid chlorine bleach in a gallon of water and slowly pour it into your garbage disposal. Allow the bleach to sit there for a minute or two, then turn on the hot water tap and leave it running for several minutes to flush away the bleach. Borax is a safe and natural cleaning product which will effectively clean the garbage disposal and minimize odors. Simply put 3 or 4 tablespoon of Borax into the garbage disposal and allow to sit for about an hour. Then flush away with very hot or boiling water.