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

I have been using this product for years. As long as you understand that it does not offer immediate results, you will not be disappointed. Yes, wet AND FORGET. Come back in a couple of weeks or so, and provided that it has been properly applied with time to dry (5 hrs) before a rainfall, and there have been some periods of modest rainfall in the days/weeks following the application (or you return to spray with clean water), the surface will be clear of green, black and other colorful mildew and algae growth. I have used this product on wood of all kinds (PT, painted or untreated), cement, masonry, aluminum and fiberglass surfaces, all with very good to excellent results. It has not harmed any of my extensive landscaping vegetation. I use it with a long-distance garden hose sprayer to cover my entire tile roof in FL, as I stand on a ladder at the edge of the roof. I have been doing this for years with great results. It can be expensive, but when you consider the labor involved with using alternative methods (pressure washing) I think it is worth every penny.

I’ve often used this on my paver patio. Yesterday I tried it on my screen enclosure. The frame and the screens had a bad case of mold/mildew. Pleasantly surprised, it worked great.

Did a great job turning my vinyl and aluminum siding from green back to white. It works over time, about four weeks in my case, but as advertised no scrubbing or rinsing needed.

Worked as described. It did damage all the flowers that wer nearby. Nothing in the directions said anything about this.Made my wife sad.

I've used it for years and Wet n Forget works. It just doesn't work fast. I balance price and convenience, but if I had larger area to treat, I'd put more emphasis on price.

I really like this. It takes a while to work but does a nice job. It is easy to use. Would not want to be without it.

This stuff did exactly what it was supposed to do; remove green moss growing between my daughters shingles on a shady side of the house. Literally within 1 week of application (actually saw the moss dying within 2 days), all has turned into dead moss slowly being washed away by rain and wind. I was considering power washing the roof; no need with this stuff, just spray it on liberally and walk away. Easily a 5 star purchase.

Repeat buy for me - it does its job well and the effects lasts for a while, even in wet/damp areas. Recommended to treat mold, mildew, moss etc.