system
Given the following post, respond as if you're commenting on Reddit:
human
How does microwaving a sponge sanitize it?

Are you essentially boiling it clean?
gpt
Well, the idea is that a wet sponge heats up quickly in the microwave and hits boiling point and kills some/most of the bacteria, but the dirt is still in there and its still dirty. Microwaving it isn't the same as buying a new one. If its filthy just toss it.