Sterilizing Sponges

February 13, 2011

A pile of sponges ready for cleaning.I put kitchen sponges in my dishwasher and run the cycle with a cup of bleach. After the dishwasher disinfects of the kitchen sponges, I spray them with a disinfectant spray and place in the microwave for about 50 seconds on high power. After completion of using the sponges to wash the counters, stove and other areas of the kitchen, I once again wash the sponges thoroughly in hot water, spray with a disinfectant spray and place in the microwave for 1 minutes at medium/high power.


Make sure that there is no metal elements on the sponges before placing them in the microwave for disinfecting purposes.

I also use the same method for micro-fiber cloths. The sponges and the micro-fiber cloths are laundered in hot water in the washing machine once a week; otherwise, they are washed in the dishwasher with bleach; the bleach also disinfects the dishwasher.


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Bronze Post Medal for All Time! 213 Posts
May 1, 2008

Whenever you run your dishwasher, tie or clip your dishcloth to the top rack of your dishwasher. It will get clean with your dishes!

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January 9, 2018

It is recommended that you heat your sponge in the microwave for a minimum of 2 minutes to kill all bacteria. This page is about how to sterilize your sponge in the microwave.

Sponge in Microwave

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May 1, 2008
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February 13, 2011

Love sponges in the kitchen but not the spread of household germs? Keep your sponges neat and clean simply! Each morning, rinse your sponge with a little soap.

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