Raise your hand if you like the smell of cloves! (ME!) Let me introduce you to a little bottle of clove oil, something that will make cleaning your bathroom a far more lovely experience than you achieve with commercial stuff.
Clove oil inhibits mold.
Just add a few drops to tap water (maybe 3-4 drops oil for every 8 ounces water). Pour the mixture into an empty spray bottle, and you have a handy, beautifully-scented mold inhibitor! I find this especially nice in the bathroom as a final touch after a clean. Just mist the clove oil-water solution on non-porous surfaces (tile, shower curtain, even your wall and grout are fine) and walk away. Your bathroom will smell great, and no new mold will start sneaking in behind your back. Other very effective, natural mold and mildew inhibitors are white vinegar and apple cider vinegar. Just don't expect any of these to remove the black mold stain, if it had gotten that bad; you will need bleach for that.
A word to parents: Don't be tempted to go crazy with clove oil and plastic bath toys. I recommend a white vinegar solution for those (LMNOP must have read my mind, and their latest blog post is on this very topic). You can, however, rejoice in clove oil's analgesic properties. It is apparently excellent for toothaches (though not for sore gums or children under 2).
By the way, many commercial mold removers actually only remove the stain of mold (something clove oil does not do). They can bleach the surface white, but the spores are still active. I learned that nasty tidbit from the insurance guy who came to look at the house after we had mushrooms grow out of the carpet. That whole room was a potential mold zone, and he scoffed at the bottle of Exit Mould our estate agent had provided. The fumes would have been horrific, and what we needed was a preventative rather than a cover-up. His suggestion was to wipe down the walls with apple cider vinegar diluted in water. Much more pleasant, non-toxic and quite effective (also a good kitchen floor cleaner). Thank you for that!