Questions and Answers for Wet & Forget 0.5 Gal. Moss Mold Mildew and Algae Stain Remover

A:  I apply it every April and October

A:  Put it on when you have a couple of days of no rain so it has time to work. Effective for up to six months in my case, then you will need to re-apply. I do not think a particular season is relevant.

A:  Wet & Forget can be applied anytime the temperature is above 32 degrees. October is a great time to apply as Wet & Forget will work throughout the winter with the snow.

A:  Rain is the most effective way to wash it off a surface after, but that part's not needed. Don't use it in any season where the product would freeze on a surface. Other than that you should be ok.

A:  Fall

A:  Yes, Wet & Forget can be used on virtually any exterior surface such as paver walls and walkways without killing nearby grass. Wet & Forget will not kill grass though if a significant amount is sprayed directly on a lawn, you'll want to rinse the grass with water to avoid temporary browning.

A:  I used it on my walkway with no damage to plants or grass. However, I did use caution not to over spray. Results were "good" but it did take time.

A:  Did not harm grass.

A:  For some reason my dog likes to lick the sidewalk. Why I don’t know but I am guessing maybe salt. For this reason I don’t use it around sidewalks. Last year my dog was sick for no reason I could pin down. I am not saying this was the cause but as an extra measure of caution I keep her away from any area that this solution comes in contact with. As far as your question about the grass I did not see any damage to any plant life so I would not recommend against using it but I would spray it in a smaller spray pattern as to control the overspray as you would any pesticide or herbicide. Hope this helps and by the way I used it on my roof last year and one application seems to still be working because the treated area is still clear and an untreated area I couldn’t reach is still growing.

A:  If it"s a mildew/moss based stain, I am confident over a reasonable period of time, the stain will be removed. However, if not mildew, and more likely chemical based, I would use muriactic acid which is formulated to clean brick.

A:  Wet & Forget will remove green and black stains growing on brick surfaces, it will not remove paint stains or efflorescence.

A:  using this product the stain will work over time maybe use 2nd coat. I use Muriatic acid on stone and brick but be careful because it is stronger.

A:  Hey----I use both---Wet & Forget and pressure washer on various places. If power washer will not do it----I doubt W & F will either.

A:  Yes this product is safe around water, kids and pets. The product is biodegradable and works very well.

A:  Not sure. I used it only on the roof. It did work well. It did take some time though.

A:  I'm afraid I don't know the answer to your question. I used it on my driveway and it worked very nicely. As I mentioned in an early posting, the moss dies very quickly but, unless you make the effort the scrape off the dead moss, it will take several months for the rain and snow to eventually wash it off. Are you considering using it near a pool? I would contact the manufacturer to find out the product's safety profile regarding usage near/around water.

A:  I have used this on roofing and green treated deck wood and both are close to plants and wild animals. It works well for my uses. I think it could be brushed scrubbed on a wooden dock to treat mold.

A:  Wet & Forget should be applied at least 100ft away from lakes, ponds, rivers, and streams.

A:  It worked on my shingles with no damage what so ever.

A:  Absolutely! Wet & Forget will remove moss, mold, mildew, and algae stains on shingles. Wet & Forget will not harm the color, or damage shingles.

A:  yes it will, no it will not.

A:  Yes, Wet & Forget is safe to use on virtually any exterior vinyl surface, including fences. There will be no discoloring, yellowing, or damage to the surface.

A:  yes , I have used it on white vinyl chairs with out discoloration

A:  I’m not sure. I used it on concrete and white bricks.

A:  Have used on brick sidewalk and also exposed aggregate concrete patio. It removed "discoloring" for me on those items.

A:  Wet & Forget is perfect for unstained/unpainted cedar wood surfaces.

A:  I wouldn't waste my money on it. Murphy's makes a really nice wood cleaner which moisturizes the wood at the same time. This stuff made no visible difference on the white wall outside that I used it on.

A:  No. It did not, however I did wear work shoes that I took off when entering the house.

A:  After applying Wet & Forget, keep wet shoes outside until they've fully dried. Wet & Forget will not damage the surfaces you walk on after using Wet & Forget.

A:  Of course I waited for my deck to fully dry. I saw no damage on my carpets or flooring. You can smell the chemicals whilst on the deck but not in my home. It worked wonderfully and within three days there was no more green slippery moss and mildew. I highly recommend this product.

A:  That product is designed for outdoor usage. I don't believe the indoor was meant for carpet, and it's extremely difficult to remove mold/mildew from carpet in any case - usually best to dispose of it. You might also want to read the reviews on the indoor version, as they don't seem to be as positive as for the outdoor version. https://www.homedepot.com/p/Wet-Forget-64-oz-Indoor-Mold-and-Mildew-Disinfectant-Cleaner-802064/205215922

A:  Well, since you mix it in a 1:5 ratio with water (1 chemical/5 water) I think is is very diluted. However, although I have not experienced a problem spraying on brick sidewalk, why take a chance? This solution soaks in rather easily and quickly for me and surface is not very wet for long. I just think it wise to "stay off" until soaked in. (I backed up as I sprayed with sprayer, and wore boots.)

A:  This is a great product and yes it is safe for children and pets AFTER it has dried. I highly recommend this product.

A:  Hello! After your application has fully dried, the surfaces you've applied to are fine to be walked on.

A:  The product claims to be plant safe but I would keep my kids and pets off the treated area until the product dissolved the stains.

A:  According to the manufacturer this product is safe for pets. Of course I waited for the deck to dry before we walked on it. There is a chemical smell for a few days but it never carried into our floors or carpet.

A:  Haven't used it yet, waiting for spring. However I would assume that coverage depends upon application: the lighter the application, the greater the coverage; the heavier the application, the less the coverage. So, I don't think there is any definitive number that can be given for the coverage; its going to depend upon the extent of the algae problem one has.

A:  II guess it depends on how heavy the moss infestation is. I used less than 1 gallon of mix on approx 300 ft2 with moss. Product worked well and moss has not returned in 6 mo or so Note that moss does not disappear over night- it took several weeks.

A:  I used my Wet & Forget to kill lichen on plant bark for which it worked without harming the plant. I applied it twice and then blew off the dead lichen with a water stream. Then applied Copper spray to remove the remaining problem. If used on a roof for black fungus than whatever area can be wet with a pump sprayer at double the dilution rate would work .My guess would be as much as 500 sq ft. The cleaned roof stays clean for at least a year. This is the experience of my neighbor. My roof I applied chlorine and laundry soap to kill 95% of the black and then installed zinc strips at the peak to keep black from returning. Roof looks like new. I also am applying Metacrylic water proofing after diluting it by 40% to stop further deteriotation of the shingles and in my case stop leaks.May require 2-3 applications. Product worked very well and dries clear. I live in Florida with very heavy summer rains.

A:  OK Mark---Yes, this size W&F does make 3 gallons (You mix for example 5 cups water to 1 cup W&F.) And remember you use a garden sprayer to dispense this. I use this on my patio and brick sidewalks outside. Have used on wooden places around upper parts of house. It works and yes it goes a long way. So just figure how much area you can spray with a fine spray with a gallon in your sprayer. It goes a long way. Takes a little while to "kill" mildew and moss on my flat surfaces but "good stuff." I do have to use it every season as living in South we have high humidity and also lots of rain/moisture. Go for it. The 0.5 gallon size (makes three gallons) should adequately cover the average home I would think. Good luck.

A:  Hi Mark! A half gallon of Wet & Forget will make 3 gallons and cover 375-1125sqft depending on how porous the surface is. For example, you'll have much greater coverage on vinyl siding compared to cement. You can find coverage on Wet & Forget at the bottom of the front label.