This is a bleach-based formula that's great to use on tile, grout, tubs, toilets, fiberglass, shower doors, vinyl curtains, counters, and sinks.
Promising review: "I never leave reviews unless I am completely blown away, and this stuff blew me away. We had a bunch of mold growing around the air handler units in our garage and upstairs. I tried using straight bleach on the mold in the garage, and it did absolutely nothing. I then bought the Home Armor and sprayed it on the upstairs unit. I was very skeptical, but literally in two minutes without scrubbing at all, it not only removed it, but I can't even see any stains. Again, I did not scrub at all; I just sprayed on, and two minutes later it was gone. AMAZING!!" —Breckbordr
Get it from Amazon for $8.59+.