Rated 3.5 out of 5 by 20
Rated 5.0 out of 5.0 by Waldo Works
This product works. I know for sure . I live in Naples Fl.. About as far south as you can go...mold on my tile roof has always been an issue. I applied as per the instructions. I waited for months and could not really tell how well it was working. So I went back up and walked around to look more closely . Yes, it was starting to work. Two months later I notices two rows of tiles on the back side that I had missed... It was so obvious . I reapplied and in 3 months my roof looked like new. Any one that says that it doesn't work is misapplying or doesn't have the patience and wants instant results. No odors or smell
June 20, 2015
Rated 4.0 out of 5.0 by Sprayer I don't konw ehat to say
This solution is supposed to work... but it takes several weeks to take effect. So I expect it to work, it was easy to apply. It is a concentrated formula that needs to be diluted. The preparation could have been made easier it the bottle were graduated or provided some means of measuring the dilutions.
June 30, 2015
Rated 5.0 out of 5.0 by Nayomi Wet and Forget
I have read other reviews and I am truly amazed. It works beautifully in Central Florida on shady concrete with black mold building up. I have pressure washed every year for 16 years which is a tedious chore, spending hours trying to remove the mold. I used this on alternating sections of the sidewalk to give myself the ability to make a side by side comparison in different degrees of sunlight exposure. There was no reaction when it was applied, there was a very slight odor, but there was a little tint of wet look immediately after the application. One week later there was a visible difference. Each day after that resulted in less mold and discoloration. The sidewalk brightened up after about three weeks. I have now applied the product to the other sections that I skipped.
I don't know why other reviews mention chemical reactions. color changes, and odors. I can only assume that there may have been other chemicals already on the sidewalk before trying to use this which resulted in some sort of reaction and maybe is preventing it from working as intended?
So far it even removed the serious mold built up around my AC unit. That was real bad. I highly recommend this but make sure this is not being used after you have already attempted to use other cleaners - just a thought. I know I had not cleaned my walkway since last spring so there was nothing to react with this.
May 20, 2014
Rated 1.0 out of 5.0 by Customer Product did not prove to be as advertised.
I regret ordering this item. It did not perform as advertised.
April 14, 2015
Rated 5.0 out of 5.0 by JRK0608 Does the job, am very pleased
I applied this in the early spring 1-1/2 years ago on a stone patio and steps in a very humid, lakefront area in WV. Within a couple of months the areas were brighter and cleaner. I sprayed in the fall, and again the following spring and the patio area has never looked nicer. Great product, not as environmentally damaging as bleach, although you do have to be patient for results and remember to reapply occasionally in order to keep things looking good.
I also used this on a bluestone patio at our primary residence in PA and have had the same great results.
August 18, 2014
Rated 5.0 out of 5.0 by Ambassador This stuff really really works
I had a family gravestone so full of lichen that it was just about unreadable. I found this and tried it and the lichen and moss just melted away. The stone looks like new. I only wish the local store stocked it but ordering on line was quick.
January 1, 2013
Rated 5.0 out of 5.0 by angelgran247 HIGHEST RECOMMENDATION!!
I was really skeptical that this product would do what it said of "just spray on and wind and rain will do the rest." Believe it or not, IT WORKED!! I had algae on my garage door and had to remove it. I sprayed it on as directed and it is almost all gone in just two weeks!! I would recommend it to anyone with a mold, mildew, algae, etc problem.
March 28, 2013
Rated 5.0 out of 5.0 by Cimags Love this product and have been using it for years. Glad to finally see it at Home Depot!
Love this product and have been using it for years. Glad to finally see it at Home Depot!
April 3, 2012