Wet & Forget Moss, 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.

This product is very good . It really removes dirt and mildew on so many surfaces. I used it on my house , my patio , my pavers and it has performed great. It doesn’t harm my plants so I can use it all around the house without worry.

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 been using this product since it came out. It works well! The price has gone up considerably through the years as the product has become well know.

I have been using Wet and Forget products for about 5 years now and the results on my applications have been amazing. I have used it on cement side walks, cement pavers, stone beds, and vinyl siding. It is a great product, and within months safely removes mold, moss and algae from almost any thing. I follow the directions on the label and usually if the mold is really bad... I will apply it twice within a few months. My fathers sidewalk was completely turning black, along with the stones in his stone bed, which both was on the north side of his home. I applied Wet and Forget and walked away. Two months later I could not believe the difference, so I applied it again before the snow fell. This spring his side walk looked like brand new cement and the stones in his stone bed were back to original color with no mold or moss. It has a slight cleaning agent smell, but nothing bad, it is used for outdoors only. Eliminating mold on your vinyl siding on the north side of your house will last for several years. At least it has for me.

This stuff works great to remove green growth (moss?) from our patio bricks. Easy to use and quick results. We’ve purchased it multiple times in the past 3 years.

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

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.