Does this do anything on mild black mold grout spots?
2070863
Yes it does. I paint it on and rub it a bit with the tip and let it dry. Wash it off with water and a dedicated brush. Good as new.
493886
somewhat but probably not the way you would like the results to be. Go to http://www.ronhazelton.com/ and search under his quick tips. He has one on cleaning grout.
2084070
Yes but it may bleach the material. It's worth testing. Instagone is the best for mold and mildew removal. See if you can find Quick10 for fabrics. It's from the same company and works on fabric and carpets.
2270277
I have used it on every type of surface including my 1940's oak floors. If you don't over saturate the area (use it as you would any other water-based cleaner) it won't leave water marks. It also works on all soft surfaces and on my original plaster walls.
2110723
Hi. It will remove most the seal and paint. There is a video on their website showing it remove permenant from grout.
434760
If you are trying to remove pet odors from tile grout I would give it a try, but it is an enzyme product and it won't bleach out stains. I used it on my rug and sofa and it did a fine job. It smells decent also. On the sofa I had to do 2 applications.
2272739
It should, most mold will fluorescent. However I don't think it will work all that well. I might be mistaken, but I believe that any mold on the interior side of drywall should be visible to the eye, and mold in the carpet fibers will mostly be removed by the vacuum cleaner. Its the mold inside of the wall cavity (very common because of poor vapor barriers and failed weather stripping) and under the carpet (in the reinforced webbing and padding) that you wont be able to see at all. You can check the drywall at the seams and edges, and you can leave the carpet un-vacuumed for a couple of weeks, if you have mold then that is the only way you should be able to detect it with UV light. Ammonia and other safer botanical chemicals can be used for the carpet, but the drywall will most certainly be ruined as the mold will be inside of the calcium sulfate substrate. This would definitely work for grout and tile, but the key is that UV light will only cause fluorescence in what the light can hit.
1869419
yes, it cleans grout great! however, it kills the bacteria and powers out gunk - it won't turn it white again. grout is porous and can stain from mold, etc. to get any stains out of it, it's best to use a bit of bleach on it after you get the gunk off. once it's clean and dry - use a grout sealer on it - and the next time it gets dirty, it won't stain the grout.
507676
I bought this for pet odors and was disappointed by its ineffectiveness. I haven't tried it on mold and mildew yet, but would hope it would do a better job than with the cat urine (which I guess nothing can remove...).
2270814
If so I have not seen it. If your grout is really dirty then you will need grout cleaner for that. It works on very mild dirt and stains (i.e. food) in the grout, but not on really established stains. Hope this helps.
899934
In one treatment it removed mold from my marble tile, grout, and all the edges that connected to the door. I also used it on the ceiling to remove mold spots up there. I have never been more satisfied with a cleaning product.
2083669
It worked well for me on mildew in the paint on a groove in a exterior medal door. A shadow of the stain is still there. For your application, I'd recommend getting one bottle to try. Obviously you have a roof leak. Don't waste you money cleaning mold from roof decking that may have to be replaced when the leak location is found. I just checked it on the mildewed exterior painted wood siding. Worked real well.
1829112
Yes, I have used it many times on my colored grout. I have both a beige and darker mauve colored grout, 1000 Sq. Ft. and have never had a problem.
1927501
Why not use nature's miracle on the grout or white vinegar.( I have a dog and that's what I did when she was a puppy) I don't know if the steamer would help.
2036110
Yes I did not have that issue. However I was trying to get dirt out of lighter colored grout, and it worked pretty well. I did expect it to do a little more.
188973
Sorry. I don't know. Haven't tried it on yellowed grout. My guess is it is not the product for that. This product seems to lift the dirt/stain and yellowed grout may be yellowed throughout due to age. Probably need some sort of bleach or acid. Perhaps a wood bleach which is safe and might work.
405402
I've used it on a brownish tan colored grout and it didn't change it. My brother in law is a chemist and he says the main ingredient is super, super, concentrated vinegar. Hope this helps.