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10 lbs. 10,000 sq. ft. Moss-B-Ware Moss Killer Powder for Roofs and Walks

$29.97
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  • Kills moss and is safe for use on roofs,patios, walkways and more
  • Use any time of the year, the pesticide covers up to 10,000 sq ft
  • Shake direct from container or dissolve in water for application
  • View More Details

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Product Details

About This Product

The CORRY'S 10 lbs. Moss-B-Ware is designed to attack moss on roofs, patios, walkways and other outdoor surfaces and is safe for use on wood, composition, concrete and many kinds of metal. It can either be sprinkled dry or mixed with water based on the needs of your surfaces. 10 lbs. of this product will treat an area of up to 10,000 sq. ft. and will last for up to 24-weeks.

Highlights

  • Recommended for use in treating structural moss on wood, composition, concrete or metal surfaces (except copper)
  • Helps to control moss on roofs, patios, walkways, decks and driveways
  • 10 lbs. treats up to 10,000 sq. ft.
  • Approximate 24-week longevity
  • Mix with water or apply dry
  • Easy to apply in either liquid or dry form
  • Return Policy

Product Information

Internet # 327542397

Model # 100550397

Store SKU # 1010407475

Additional Resources

Shop All Corry's

Specifications

Dimensions

Coverage Area (sq. ft.)

10000 sq ft

Product Size

10 LB-Pound

Product Width (in.)

5.375 in

Details

Application Type

Dust, Spray

Area of Use

Driveway, Patio

Compatible Grass Type

Not for use on lawns

Concentrated or Ready to Use

Ready to use

Emergent Type

Post-Emergent

Organic

Non-Organic

Pack Size

1

Returnable

90-Day

Safe For

Safe For Kids, Safe For Pets

Safe for Edibles

No

Total Coverage Area (sq. ft.)

10000

Weed Type

Moss

Questions & Answers

Is the 10lb version the same powder that is sold in the 3lb shake can, or is it a granule? Does it have a shake lid for easy dispensing?
ByNov 6, 2026
0 Answer | 
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The instructions for mixing Moss B Ware with are are by the pound. I do not have a scale to weigh the product so I would like to know how much 6 ounces weighes or any equivalent measure.
ByOct 19, 2026
0 Answer | 
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How is it applied?
ByAug 3, 2026
0 Answer | 
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Can this product be used on brick paper, patio and walkways? What precautions do you recommend to protect surrounding plants?
ByMay 7, 2026
0 Answer | 
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Does this product kill moss on a gravel driveway?
ByMar 12, 2026
1 Answer | 
Answer This Question

Yes, this product kills moss on gravel driveways.

By|Mar 13, 2026


    Is the water/power solution pressure washer safe?
    ByOct 15, 2025
    1 Answer | 
    Answer This Question

    Hi- This product is designed to be applied either by sprinkling it dry or by dissolving it in water and applying it with a watering can or a pump-up sprayer. We do not recommend using a pressure washer for application. It’s important to avoid spray or dust drift during use.

    By|Oct 15, 2025


      Is this a Powder or Granule?
      ByJun 5, 2025
      1 Answer | 
      Answer This Question

      Hi Sammy, This product is a granule that should be mixed with water before application. For use on rock, gravel, flat roofs, roofs that cannot be walked on, patios, and walkways, slowly add 1 to 2/3 lb. of the product to 3 gallons of water, stirring until fully dissolved. Apply the solution using a sprinkling can or pump-up sprayer for best results. Thanks!

      By|Aug 9, 2025

        (1)

        What amount do I add to water?
        ByApr 14, 2025
        2 Answers | 
        Answer This Question

        There is no set amount. The label will give you the amount depending on how you are using the product.

        By|Apr 15, 2025

          Thank you for your question. The label gives you mixing instructions. The amount depends on how and where you are using it. Not a cut and dry amount. 800-265-0761

          By|Apr 15, 2025


            Viewing 1-8 of 44

            Customer Reviews

            4.2 out of 5

            • 4.2 out of 436 reviews
            • 85% recommend this product
            Filter by:
            Showing 1-10 of 436 reviews
            Overall, I’m satisfied with the results in a relatively short amount of time. It is a fine powder (like all-purpose flour) that sticks to where you want it, but can’t be applied on windy days unless you mix it with water and spray it on. I haven’t noticed any runoff harm to nearby vegetation.
            by
            This moss killer works great on my roof. I prefer the powder form in Moss B Ware to more granular other products. It sticks to the roof surface rather than just rolling off. I’ve used this product in the past and expect that it will kill the moss again this year.
            by
            This customer chose to rate the product and not provide text.
            by
            • Verified Purchase
            Don’t order for delivery
            Both canisters had lids fall off during transit and left me with powder all over the box which I accidentally brought inside my home. I spent over an hour cleaning up this toxic mess. Otherwise a good item. Just buy it at the store and safely transport it at your own discretion.
            by
              • Recommended
              2 found this review helpful
              If you live in the NW where cool wet lingering weather promotes a cornucopia of algae, mosses, li...
              If you live in the NW where cool wet lingering weather promotes a cornucopia of algae, mosses, lichens, fungus' and molds - most of which grow abundantly on any and all surfaces...especially roofs, you need a way to get rid of it. These can damage shingles and retain water over time. Enter Corry's Moss-B-Ware. This is concentrated powder - not liquid. This has an advantage over the liquid forms....firstly you can see it. Liquid you cannot. You know exactly where it lands and where you need more or less of the powder. Next, the powder is very fine and stays in place after landing. Lastly, if there is a need for liquid application, simply mix some of the powder with water and apply (like in hard to reach places and you you wish to spray it into place. This tends to be much cheaper than the other brands that are in liquid form which is mainly water. To apply: before starting, look for a non-windy and rainy day. I like to apply the product to a damp roof to make the powder stick. I have a powered leaf blower and clear most debris first (roof, gutters, and between stacks and flashing. For moss that has grown a crown of green popping up from the edge of a shingle, I take a stiff brush or push broom and knock most of these crowns off. This leaves the "roots" which extend under the shingles. Beginning at the peak of the roof I shake out powder low down close to the shingles (as the powder is fine, even small air currents will make it drift from where you want it). I cross horizontally all the way across the roof then drop about 2 linear feet and repeat across the roof. NOTE: When applying, never walk backwards or backup lest you fall! Follow all instructions. A can covers roughly 600 square feet (I needed two for my roof). Moss B Ware products will not stain roofs or corrode aluminum and galvanized gutters, when used as directed. If applied from this shaker container, no other equipment is necessary. Pitched roofs that can be walked upon, such as composition, wood shingles, or shakes can most easily be treated by shaking the Moss B Ware granules directly from the container along the ridge of the roof. Rains then wash the Moss B Ware product down through lower moss patches. For roofs you cannot walk on, mix up and spray surface. After the moss dies, brush away any remaining moss. If there is any moss hanging on, place some additional powder directly onto the moss.
              by
              Response from Corry's TeamJan 29, 2020
              Thank you for taking the time to thoroughly review our product, Jeff! We appreciate your business - all the best. corrys
              • DIY
              • Verified Purchase
              • Recommended
              15 found this review helpful
              This customer chose to rate the product and not provide text.
              by
              We have used this product for many years with excellent results.
              by
              Good product. Easy to use and gives a good range of area on the roof. Kills moss every time we use it.
              by
              • Verified Purchase
              This customer chose to rate the product and not provide text.
              by
              • Verified Purchase
              The can design made it very easy to pour.
              by
              Showing 1-10 of 436 reviews

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              Product Snapshot

              Ideal for homeowners looking for long-lasting moss control, this granule formula provides up to 24 weeks of protection and treats up to 10, 000 sq. ft.
              Ideal for moss control and lawn fertilization, promoting a healthy, green lawn with slow-release nutrients.
              Ideal for homeowners who want a lush, weed-free lawn with season-long feeding.

              Coverage Area

              10, 000 sq ft
              4, 000 sq. ft.
              10000 sq ft

              Active Ingredients

              Zinc Sulfate Monohydrate
              Dimension

              Application Method

              Granular Dust
              Granular
              Granular

              Residual Control

              24 weeks
              6 months

              Rainproof Protection