When is the best time to give the bathroom a good cleaning? Right after you shower. Surfaces in the bathroom -- like mirrors, faucets and countertops -- will likely have a fine layer of steam on top of them. With just a microfiber towel, you can wipe down all the surfaces quickly. And the grout in the shower? All the grime and dirt is considerably looser after a hot shower; just scrub and rinse in minutes.