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How to Sharpen Garbage Disposal Blades

Chef sharpening knife

Garbage disposals are one of the most helpful and effective appliances to keep your kitchen clean. These days, almost all homes and offices have a garbage disposal. We know it gets frustrating and a nightmare for some when they are not functioning properly.

Sharp blades are essential in maintaining the efficiency of your garbage disposal and prolonging its life. Over the time we pour down so many different things in there that we should not, it makes blades dull and the garbage disposal also starts to smell funny.

Here are few ways to Sharpen Garbage Disposal Blades

Clogged garbage disposal

There are few tricks that you could try to sharpen the blades of your garbage disposal as well as to get rid of the unpleasant smell.

  1. Preventing Disposal Blades from getting clogged

As the saying goes ‘Prevention is better than cure’, it is applicable here as well. The first way is you should prevent your disposal blades from becoming clogged. We can prevent this from avoiding putting things into the disposal that are greasy, fibrous, or hard such as:

  • Asparagus
  • Lettuce
  • Celery
  • Banana Peels
  • Bones
  • Potato skins, etc.

2. Cleaning Blades using ice and lemon

Lemon slice in pile of ice

For this method you will need a jar full of ice cubes and a lemon cut into smaller pieces. Both can be found easily in your refrigerator.

So, in order to sharpen the blades of your garbage disposal, all you have to do is pour down the ice cubes down the drain, turn on the water and switch on the garbage disposal. Let the water run for 3-4 minutes.

As the garbage disposal break down the ice cubes, its blades will become sharp.

Now, how to get rid of that unpleasant smell?

Man on yellow background pinching nose

Whenever you feel like that your garbage disposal started to smell little gross, then there is a simple trick which you can follow not just for this one time but on weekly or monthly basis to keep your kitchen smelling wonderful and fresh. Citric acid also helps to clean the blades and remove all the greasy deposits from it.

So , all you need to do is take a lemon or any other citrus fruit, cut it into smaller pieces, again pour it down the drain, run the water and switch on the garbage disposal.

Remember to cut the lemon into smaller pieces because the with the big chunks your garbage disposal will have a hard time processing it.


If you could not find a fresh lemon but have some rotten ones lying in your refrigerator which you are not going to use for cooking, you can even put that down the garbage disposal drain to keep it fresh.

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