Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces

this product is excellent , removes mold and mildew from my aluminum siding and stayed clean for two years, had to do a light touch up after that...great product, easy to use, spray and go

This stuff is awesome! Just follow the easy instructions and voila -- concrete walkways are completely clean. So much easier than using the water pressure. It does take a few days for the results to appear and you need to use caution around grass or other plants, but well worth the wait.

I heard about this product on a DIY talk show that I listen to on the weekends. It sounds too good to be true, but I'd hate to miss out on a possible good product! :)The pros:+ VERY easy to apply with a spray bottle or pump sprayer.+ Work great on exterior brick surfaces, like chimneys.+ Advertised - 1 gallon concentrate makes 6 gallons of ready to use product. Covers approximately 750-2250 square feet.+ Advertised - non-caustic, Non-acidic, Contains no bleach.+ Advertised - safe on any outdoor surface.+ Advertised - one step process... Wet & Forget!+ Advertised - EPA approved one step process that requires no scrubbing or rinsing.+ Advertised - safe around plants.+ Advertised - continues to clean for up to a year.+ Advertised - can be applied at any temperature above 32° & no rain is expected for 4-5 hours.The cons:- Update - 2016 - The price has really gone up in the last year, making this product VERY expensive! Yes, this is a concentrate & makes 6 gallons, but that over $5 a gallon! I dropped one rating star for this.- Work very s-l-o-w-l-y! Don't expect instant results on everything this product is applied to. It could take a month or longer for visible results.- Slight bleach like smell when it's first applied. Not bad, but not scent free.Closing comments:▪ I sprayed the side of a shed & fencing that had green algae on it. By the next day, it wasn't green, looked white, which should wash off when it rains. :)When I was reading the instructions on how to dilute the concentrate... 1 part Wet & Forget Outdoor to5 parts water, I thought there had to be easier instructions. I found this on the Wet & Forget website FAQ (Frequently Asked Questions).▪ For a 1 gallon container or sprayer, add 2-1/2 cups (20 oz.) of Wet & Forget Outdoor concentrate & fill with water to the 1 gallon mark.▪ For a 2 gallon container or sprayer, add 5 cups (40 oz.) Wet & Forget Outdoor concentrate & fill with water to the 2 gallon mark.► Update - June 25, 2014▪ sprayed the green on the fence & on the concrete under our hose reel yesterday. Today, all that green is gone! Not everything I sprayed shows this kind of result, but so far, I'm impressed enough to up my product rating to 4 out of 5. :)► Update -November 11, 2014▪ We sprayed the driveway + sidewalk yesterday & I can already see it working on the driveway! The long range plan is not having to pressure wash the algae off the concrete in the Spring. :)▪ I just ordered another gallon so I'd have it on hand, ready to use.► Update - November 18, 2015▪ Since I started using Wet & Forget on the sidewalk & driveway, I haven't had to do any power washing in years! :)▪ This product is on the expensive side, so I shop around when I need more. The last 2 gallons I purchased cost me $24.97 a gallon at the Home Depot. If you buy 2 gallons on-line, the shipping is free! :)► Update - March 9, 2016▪ I've been using this for years & it works as advertised. The down side is how expensive it's gotten! Last year I paid about $25 a gallon, this year it's $34 a gallon!▪ The best price I could find this year is here on Amazon & in my opinion, it's expensive! :(

My Mom loves this

I have used this product on driveways, unpainted fences, rock retaining walls, concrete blocks, brick walls unpolished landcape granite stones, paved pathways and composite decks. It cleans so well, that it eliminates need to pressure wash. Concrete Driveway was almost black, before application, however, now it has a newly laid look. I have been using his product near plants (not edible) and have noticed no damage. Yes, its hard to control overspray 100% of time. I love that rain, snow, wind are also the cleaning agents and I dont need to waste any additional water in cleaning. Water is expensive. Rock retaining walls look like newly installed and just made, after using this product. I have had people think 10 year old walls were installed a month ago. I also use it on pebble bed to keep cobblestones looking clean. It works. It keeps fences clean even after 2 years of application. It doesnt seem to attract as much moss, lichen mold etc. It does give it weathered clean light grey/whitish look, which I dont mind. It does NOT give a fresh brown wood look, like if you pressure washed it.One needs to be patient after using the product. It works slowly over a year. The best time to apply it is dry fall day, so the rains can help with cleaning, not to mention winter snow. After that once a year to year and a half, maintainence is more than enough. And come spring and summer, you can enjoy the cleaner surfaces.I also used it on cedar roof. I did excellent job with it. However, the roof was old and leaked after this application, requiring me to change the roof. My theory could be a combination of any: 1) It actually started eating the moss and mold between cedar shakes, that was actually like a barrier for water somewhat. my cedar shakes had only 2 to 5 years of life left and potentially cleaning it, reduced its life 2) I walked on roof to apply the product which could have strained old shakes. - There are special shoe fasteners that I overlooked wearing. The house damage was negligible and very promptly addressed, though I wish I didnt have that extra expense. That said, I would stay out of the roof - for the rest of my life and have a professional take care of business.I almost always have extra bottles on hand. It is extremely helpful to have a battery sprayer. I used a 1 gallon manual one for years and it works just fine. Battery sprayer is way faster and probably reduces the time by three quarters.i have not tried the other product from wet and forget that connects to the hose. Many have found difficulty in the way the spray works. I dont want to try something new when this works great.Moss, slowly wears off. Lichen growing on organic surfaces is the hardest, but it loosens that up too. I noticed that the lichen dries up and does not grow even after 2 years of application. I have used this product over 10 years now and this is a cumulative review.

Satisfied