CLR PRO Heavy Duty Bleach-Free Mold & Mildew Stain Remover - Works on Tile, Wood, Concrete, Glass, and More, 1 Gallon Bottle

This works great but you have to put a lot of elbow grease into it. If you're going to spray it or put it in your car or on some furniture that may have a little bit of mold. You are going to have to put some work into it like scrub it in and that it sit for a little bit. It works great for bathrooms

This works and didn't damage material, even at 100%. Would buy again

Great

I clean houses and I can’t tell you how much I need CLR. All those gorgeous glass shower doors come out looking like new after a few go around.I spray the doors with CLR, scrub with 0000 steel wool, let set for 5 mins while I work on the rest of the shower and then rinse it off. I repeat until I am happy with it.

sometimes need multiple applicaftions

The CLR has no noticeable odor which is a welcome change from the strong smell of the bleach I usually use for mold and mildew removal. However, the CLR isn't nearly as effective. I live in Florida where fighting mold and mildew is an outgoing battle. Unfortunately, bleach is still a better solution (or Tilex for Mold) for mold removal. My guess is that for light jobs, the CLR will do fine, but we have serious mold and mildew here in FL!

We used this to remove mildew and lime stains from concrete on a walkway and pavilion. It seemed to work well but the pressure washer did most of the work so it is hard to say which one actually worked better. I would buy it again though. A gallon goes a long ways though so i will be OK for a few years.

It didn’t work on very recent black mold stains on wood veneer. So instead I mixed it with water to wash vinyl siding. It did pretty well on removing dirt and general outdoor grime. (I ignored the label telling me it’s not for outdoor use.) So I’d say it’s about as effective as any general purpose cleaner, but it’s useless on mold stains.