you’re really not supposed to use Sponges after about 5x because the germs build up on them so badly. However, you can put them in the microwave for about 30 seconds (or longer) and it’s supposed to kill the germs. It may even bring them back to life.

Don’t forget to make sure they’re wet/damp when you do this.

It might be lime-scale from hard water. I live in London, where the water is very hard, and find that cotton facecloths get slimy after a couple of weeks use. Soaking them in vinegar overnight gets rid of it, but does make them smell vinegary.

About that comment with hard water in london, sliminess and vinegar…eww

If you put your old sponge in the washer with your load, they’ll be clean afterwards. And if you don’t want to use them in the kitchen, use them for the rest of the house.

When cellulose sponges get too old and worn for kitchen use, use then for small paint touch-up jobs, polishing shoes, or cleaning the bathroom. Wash the kitchen sponge at least weekly.

Cut them up, just them in a crafty way for “printing” with paints :)

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