What are the best cleaning techniques for a bathroom sponge to ensure optimal hygiene and longevity?

To keep a bathroom sponge clean and hygienic, regularly rinse it with hot water after each use, squeeze out excess water, and allow it to air dry completely. Additionally, you can sanitize the sponge by microwaving it for one minute or soaking it in a solution of water and bleach. Replace the sponge every few weeks to maintain optimal hygiene and longevity.