Provide advice on how to accomplish the following goal. Give ONLY the advice, no other words or explanation.
For example:

Answer: <advice, as short as possible; a single sentence!>.

Goal: To make a sponge last longer by killing the germs in it.
Clean the sponge in the microwave. Make sure the sponge is wet and microwave on high for one minute to kill bacteria.
<Soak the sponge in a bleach solution to kill germs and extend its life.>