Originally Posted by Mrs. Cuillo
I stick my sponges and dish drainer in the dishwasher sometimes to disinfect them...it saves money on buying new sponges!
I used to put my sponges in the top rack of my dishwasher, but then I read that that is not the most sanitary thing to do, and it really won't disinfect them.. For cleaning them, I wash them separately in my washing machine occasionally.
But to sanitize/disinfect them, the microwave is the best. Just make sure the sponge has no metal to it and is very
wet. I do each one separately for one minute a side on high.