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  • Bayer Advanced 704710 2-in-1 Moss and Algae Killer Ready-To-Spray, 32-Ounce
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Bayer Advanced 704710 2-in-1 Moss and Algae Killer Ready-To-Spray, 32-Ounce

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List Price: $32.65
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  • Kills moss and algae on lawns, decks, patios, fences, mulch, driveways, gravel, roofs and buildings.
  • Unique, high efficiency formula kills within hours.
  • No odor, no staining formula.
  • Use on lawns, decks, patios, fences, mulch, driveways, gravel, roofs and buildings.
  • Protects for months
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Frequently Bought Together

Bayer Advanced 704710 2-in-1 Moss and Algae Killer Ready-To-Spray, 32-Ounce + Scotts Moss Control Granules for Lawns - 5,000 sq. ft.
Price for both: $41.61

Buy the selected items together


Product Details

  • Shipping Weight: 2.4 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B001DKEPJ8
  • Item model number: 704710B
  • Average Customer Review: 3.2 out of 5 stars  See all reviews (19 customer reviews)
  • Amazon Best Sellers Rank: #42,094 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description

Product Description

Kills Moss, Algae and Lichen wherever it grows. Acts like two products in one – treats lawns and patios PLUS roofs and buildings. Kills within hours, protects for months. No-odor, non-staining formula.

From the Manufacturer

One formula kills Moss and Algae wherever it grows. Treats lawns, patios PLUS roofs and buildings. With other brands you'd need two formulas to treat all areas. Kills: Moss, Algae, Lichen. Where to Use: Lawns, decks, patios, fences, mulch, driveways, gravel, roofs and buildings. When to Use: Anytime during the year. Active Ingredients: Potassium soap of fatty acids: 22.11%.

Customer Reviews

Sorry do not know name of it.
BOB
I suspect that if Bayer actually told you the coverage area of a 32oz bottle then you wouldn't even buy it for a lawn application.
JTF
This product was very easy to use and appears to have worked very well on the sidewalk.
McKinalews

Most Helpful Customer Reviews

11 of 11 people found the following review helpful By JTF on April 15, 2013
I applied this to a natural cedar shake roof and it worked well. It's actually been two years now and the moss has not returned. It did not discolor or harm the roof in any way that I can see. To qaulify this a bit, I am in Southern NJ and the roof I tried it on faces North-East with morning shade. The pitch is 10/12 at the top with a transition to 5/12 at the bottom. I had only moderate growth and it was heavier on the lower pitch as you would expect.

My only issue so far is that there is no information regarding dillution rate even on the web site. One bottle does not seem to go very far. The built-in sprayer nozzle is huge and empties the bottle very quickly. Label says for Other Sites: "Apply 8 to 12 gallons of solution per 1000 square feet." That's nice. How do I measure that exactly? It doesn't even say how much area one 32oz bottle should cover. Do they expect me to have a flow meter on my garden hose? My only resonable option is to mesaure the time it takes to fill a 5 gallon bucket using the nozzel and calculate the flow rate per second. Then at least I can "time" my application rate for a given area of roof.

I'm guessing that for the folks that say it didn't work on thier lawns they didn't apply enough. I suspect that if Bayer actually told you the coverage area of a 32oz bottle then you wouldn't even buy it for a lawn application.

Update 4/29/2013: So, I did the application test this weekend. I emptied the spray bottle into a clean container and refilled it with water. I attached my hose and sprayed the bottle into a 5 gallon bucket while I timed it. In about 2 minutes I emptied the 32 oz bottle and approximatley filled the 5 gallon bucket.
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4 of 4 people found the following review helpful By R. B Sims on April 29, 2013
Applied to a light-gray asphalt shingle roof that is about 10 years old, applied as directed, this product worked as claimed, with no staining or other issues experienced.
In the larger context: I've been seeing far more of this lichen stuff all over trees and paving stones in the neighborhood, like nothing in the past. Perhaps global warming is causing this. And it's much more than a nuisance: When I first saw the stuff on my roof, I thought it innocuous. When I got up on the roof to take a closer look, I was horrified to find its roots burrowing into and destroying the asphalt shingles. So now we homeowners have yet another thing to worry about. Research indicates that installing a galvanized strip of metal near the peak of the roof will cause eventual zinc oxide to run down and kill the lichen; but copper is said to be even better. Using scrap copper wire, I fashioned 10" rings and tossed them onto the roof, which seems to be helping. The copper is not thick, so is not noticeable. Should any of them blow off, just toss 'em back up. This approach avoids further meddling with your roofing material, or walking over it, which can shorten its life. As a roofer told me: Don't make holes in your roof, and try to avoid walking on it.
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10 of 12 people found the following review helpful By Greg on September 28, 2010
This product says it doesn't stain asphalt roofs! It does! Beware! My once all-dark gray shingles are now stained with irrigular splash areas of a light-gray... and it won't wash off. Sprayed on a 60 degree day. Yes I read the instructions and shook the bottle well.

Anchorage Alaska
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4 of 4 people found the following review helpful By Michael Bremer on May 9, 2012
Verified Purchase
This is the second moss "killing" product that I have tried for around a few trouble spots on the front lawn. The first brand was safer brand moss killer. It did absolutely nothing to even alter the mosses condition and smelled like I was doing little more than spraying orange juice on the lawn. I decided to give this brand a go since it actually has more "chemical" properties to it rather than having an active ingredient of citrus. Per the packaging instructions I gave the moss a thorough soak down with the product as I did with the safer brand product. At first it looked like the moss was starting to turn a yellowish color at around day 2 and I thought it was working great. That was until it rained out. A few days later I was unhappy to determine that more moss has grown and what was starting to turn yellow has now come back full force. *Note* It did not rain for at least a week after I sprayed this. So, it's not like I sprayed it and then it happened to rain out a few minutes later. Combined with the other reviewers complaints about it staining concrete and other surfaces I would suggest to try something else. I will be trying scotts brand granules next, that actually rely on being wet down.
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11 of 14 people found the following review helpful By Ralphienator on September 5, 2010
Very disappointed. The stuff claimed to be safe for use on asphalt roofs. I used it, and it killed the moss alright, but many of my shingles curled and cracked the day after application. Now I'll be on the roof a full day replacing shingles when I should have been finishing up other projects. I'm feeling pretty upset that the the manufacturer would say it is safe for use on the roof when it obviously is not... Couldn't be more unhappy with it...
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1 of 1 people found the following review helpful By Matthew Nadolecki on October 7, 2013
Verified Purchase
I applied this product to my lawn and deck. Within 5 days of application the green algae disappeared completely from the deck. Within 7 days the moss was cleared off the grass area. Application of the product was easy and clean.
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