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

Love this stuff so much. This one is a refill, so you would need the original bottle that has a hose attachment on it. But you simply fill the bottle with the hose attachment, turn on the water hose; The bottle has its own on and off control. Then I aim it at the house, turn on the bottle and spray the sides, the shutters, the porch, etc. No rinsing required. By the end of the day I notice the green fading - and then within 24 hours, no sign of green. Love this! And won't have to do it again for 12 -24 months. No scrubbing. Literally Just Wet it and Forget it, just like it says. I've been using this product for about ten years. This is the first time I bought the refill. Just follow directions regarding weather. Pick a day when it is likely to rain right after you spray the house, or whatever you are spraying.

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.

Worked exactly as discribed. Sprayed it on and all the moss died. A few.months later just swept all the dead moss of. FANTASTIC stuff!

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

This product is very effective. I use it on my vinyl siding and vinyl deck railing. Except for really tough areas most of the mildew is gone in a few days. Takes a little longer for real thick, black mildew but removes it over time. Also keeps mildew from growing back for quite a while

The product is amazing. I have used every product under the sun and none compares to this product. I live in the Northwoods of Wisconsin. Shade and pine needles are covering my house and deck daily. I leave the house for 8 months to go to warmer weather. Before I used this product I had to power wash my decks and spindles every year to clean the moss and mildew. It took me a week, 6 hours a day to complete the cleaning. No more. Last year I sprayed everything, deck and spindles. I came back this year and it looked like I had just power washed everything. No moss. No mildew. I can’t tell you how excited I was returning to the house. I marvel at it each time I go out of the house. I can’t see why it wouldn’t work again this year if I thoroughly spray it like I did last year.

I don’t hire power wash services anymore. I have maintained the exterior of our house vinyl siding for the last 10 years with just this Wet and Forget. Now if the exterior of your house is filthy from years of grime, yeah, you’ll need a power wash or scrub first but this stuff will then keep it clean going forward. I spray it on in the spring and then again in the fall. I might have to scrub a couple of areas, around the porch and the downspouts tend to get a little mossy, but other than that, this keeps my house looking clean and repels stains with minimal effort. I tried a couple other brands of siding wash but this one really does work.

Product worked excellent on my statues and white lattice but left a white haze on my dark colored vinyl decking. Customer service suggested the fact that I use well water (probably hard water) that may be the cause. They told me to use vinegar (with a 50/50 mixture) in a power washer to neutralize it. Did that two times and each time it showed improvement. I would suggest not mixing the concentrate if using on dark surfaces.