Best Moss Remover For Concrete: 10 Sprays and Concentrates

#1 · Best Overall

1. Scotts MossEx Ready Spray

• Form: Spray
• Weight: 8 oz

Best for: Quick concrete hose treatments.

Why it ranks #1: Its fast-acting formula kills within hours, does not stain concrete, and connects to a garden hose for patios, sidewalks, and other listed surfaces.

Scotts MossEx Ready Spray kills moss within hours and has a non-staining formula, pairing fast action with a concrete-conscious treatment. Connect its sprayer to a garden hose to apply it to patios, sidewalks, roofs, lawns, or other listed areas.

The hose-connected sprayer avoids a separate dilution step, which can make treating a patio or sidewalk more direct. Its listed uses include concrete, roofs, decks, ornamental gardens, and areas around homes, while the formula also controls algae, lichens, and liverworts. Because the directions call for protective eyewear and warn of eye injury and skin irritation, application requires protective handling even though the formula is described as non-staining.

Skip it if you need a stated coverage area to plan a large roof; Lilly Miller Moss Out for Roofs 27-ounce lists coverage up to 500 square feet.

This suits buyers who want a hose-connected treatment for concrete and multiple outdoor areas with results within hours. Follow the protective eyewear directions, and plan for the broad range of listed application sites.

Listed on Amazon as: Scotts MossEx 3-in-1 Ready Spray, 32 fl. oz.

#2 · Fast-Acting Formula

2. BioAdvanced 2-in-1 Moss Killer

• Form: Spray
• Weight: 2 lb

Best for: Fast-acting mixed-surface spray.

Why it ranks #2: The ready-to-spray treatment lists patios, driveways, and hardscapes, kills within hours, and includes a hose attachment; dead moss must be removed physically.

This ready-to-spray formula kills moss and algae within hours, making it a practical choice when you want a quick treatment step on concrete or a patio. The 32-ounce product is listed to cover 500 square feet and also targets lichen, mold, and mildew.

A hose attachment comes with the spray, so application does not require mixing a concentrate in a separate garden sprayer. Its listed coverage of 500 square feet helps with planning patio, driveway, roof, or deck treatment. The formula protects for months, according to the product information, while dead moss must be physically removed after it turns yellow and then brown; include that follow-up cleanup in your workflow.

Skip it if you want a no-rinse treatment without post-kill moss removal; Wet & Forget Outdoor Cleaner 128-ounce calls for no scrubbing or rinsing.

Pick this spray when quick action across a defined area matters and you can remove dead moss afterward. Its listed uses extend beyond concrete, but the post-treatment cleanup is an important part of the job.

Listed on Amazon as: BioAdvanced 2-in-1 Moss and Algae Killer and Cleaner, Ready-to-Spray, 32 oz, 500 SQ FT

#3 · Largest Coverage

3. Lilly Miller Moss Out Dry Formula

• Form: Granule
• Weight: 6 lb

Best for: Dry-granule walkway treatments.

Why it ranks #3: The dry microgranule formula covers up to 4,000 square feet and is listed for patios, sidewalks, brick, and unpainted cement.

A six-pound micro-granule formula covers up to 4,000 square feet, making this a dry-format option for substantial moss treatment across sidewalks, patios, brick, and unpainted cement. It can be used wet or dry, offering flexibility in how you apply it.

The granular form differs from hose-end liquids, so it suits buyers who want to distribute a dry product over listed hardscape rather than spray a diluted solution. Its coverage figure of up to 4,000 square feet helps plan larger areas, while the non-staining, non-corrosive formula is specifically noted for galvanized gutters. The product information warns to prevent runoff onto planted areas and to cover nearby shrubs, flowers, or lawn where needed.

Skip it if you prefer a hose-end spray without spreading granules; Lilly Miller Moss Out for Roofs 27-ounce includes a hose nozzle for application.

This is a fit for buyers treating broad concrete and masonry areas who want a wet-or-dry granule option. Take precautions around plants, especially where roof or walkway runoff could reach them.

Listed on Amazon as: Lilly Miller Moss Out! For Roofs And Structures Dry Formula 6 Pounds

#4 · Long-Range Sprayer

4. Lilly Miller Moss Out Roofs

• Form: Liquid
• Weight: 1.8 lb

Best for: Hose-applied roof moss control.

Why it ranks #4: Its included hose nozzle sprays up to 25 feet, covers up to 500 square feet, and treats sidewalks and unpainted cement as well as roofs.

An included hose nozzle sprays this roof treatment up to 25 feet, letting you reach rooftop moss without carrying a separate garden sprayer. The ready-to-spray format is specifically made for roofs and is listed to cover up to 500 square feet.

The hose connection and 25-foot spray reach simplify treating a roof from the ground where the spray can reach, while the stated 500-square-foot coverage helps estimate the area one container handles. Its non-staining formula is listed for shingles, and verified uses also include walks and outdoor structures such as patios and unpainted cement. The supplied description says one application lasts up to a year, making application timing relevant to seasonal roof care.

Skip it if you need a dry granule for sidewalks and patios; Lilly Miller Moss Out Dry Formula covers those surfaces and is applied wet or dry.

This suits buyers treating roof moss who value hose hookup, stated reach, and a defined coverage area. Check that the roof surface is among its listed uses, and account for the 500-square-foot coverage.

Listed on Amazon as: CENTRAL GARDEN BRANDS Moss Out Roofs, 27-Ounce

#5 · Plant-Area Option

5. 30 SECONDS Outdoor Cleaner

• Form: Spray
• Weight: 4 lb

Best for: Hose-end driveway and patio cleaning.

Why it ranks #5: The hose-end cleaner treats moss stains on concrete, patios, and driveways; its listed directions say it will not harm landscaping when used as directed.

A hose-end sprayer and two-pack format make this outdoor cleaner convenient for treating moss and related stains across driveways, patios, siding, and decks. It targets algae, mold, mildew, and moss stains, with directions that include mixing concentrate with water in the refill bottle.

The included hose-end attachment lets you apply the cleaner around the home without pressure washing, while the refill directions specify a 1:1 mix with water. Its listed surfaces include patios, driveways, brick, fences, and siding, so one treatment can address several exterior areas. The product states it will not harm lawns, trees, shrubs, or landscaping when used as directed, which is relevant when treating hardscape near planted areas.

Skip it if you want a no-rinse concentrate diluted five parts water to one; Wet & Forget Outdoor Cleaner 64-ounce uses that ratio for application.

This fits buyers treating patios, driveways, and nearby landscaping who want hose-end application and a refill workflow. Follow the stated 1:1 refill dilution and use directions to protect surrounding plants.

Listed on Amazon as: 30 SECONDS Outdoor Cleaner 2 Pack with Hose End Sprayer

#6

6. Wet & Forget 128-Ounce Concentrate

• Form: Liquid

Best for: Large mixed-surface treatments.

Why it ranks #6: The 128-ounce concentrate is listed for concrete and driveways, dilutes at one part product to five parts water, and requires no scrubbing or rinsing.

A 128-fluid-ounce concentrate treats moss and other green or black stains across concrete, driveways, patios, roofs, and more. Its no-scrub, no-rinse approach lets you spray a dry surface with diluted cleaner, then leave it rather than pressure-wash the area.

Mix one part concentrate with five parts water in a garden sprayer, which gives you a repeatable application workflow for large hardscape areas. The listed surfaces include concrete, driveways, patios, decks, and siding, so one product can serve several outdoor cleaning jobs. The directions call for a dry surface and a cool day, followed by no rinsing; plan around weather to limit rapid evaporation and avoid washing away the application.

Skip it if you want a ready-to-spray roof treatment with an included hose nozzle; Lilly Miller Moss Out for Roofs 27-ounce offers that setup.

Choose this concentrate for broad concrete and outdoor-surface coverage when you can mix it in a garden sprayer and wait for suitable dry, cool conditions. Its no-rinse method is not a substitute for physical removal.

Listed on Amazon as: Wet & Forget Outdoor Cleaner – Mold, Mildew, Moss & Algae, 128oz

#7

7. Wet & Forget 64-Ounce Concentrate

• Form: Liquid
• Weight: 16 oz

Best for: Concentrate for sealed concrete.

Why it ranks #7: This concentrate is listed for sealed concrete, driveways, and patios; dilute one part product to five parts water and apply to a dry surface.

This 64-fluid-ounce concentrate is listed for sealed concrete, driveways, and patios, making it a targeted fit for hard, sealed outdoor surfaces with moss, mold, mildew, or algae stains. Its no-scrub, no-rinse directions keep the workflow focused on spraying and leaving the treatment.

Dilute one part cleaner with five parts water and apply generously to a dry, debris-free surface using a garden sprayer. That mixing ratio and application method suit buyers who already use a sprayer for outdoor maintenance. The instructions call for mild, cool, dry conditions and no expected rain for four to five hours; they also say to flush plants with water before and after application, so site preparation and weather planning matter.

Skip it if you need a ready-to-spray treatment with a hose attachment; BioAdvanced 2-in-1 Moss and Algae Killer includes one.

Choose this concentrate for sealed concrete and nearby outdoor surfaces when you can dilute it and manage the dry-weather window. Its directions call for plant rinsing, so factor nearby landscaping into preparation.

Listed on Amazon as: Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 64 Fluid Ounces

#8

8. Lilly Miller Moss Out 3-Pack

• Form: Spray
• Weight: 6.3 lb

Best for: Ready spray for roofs and walks.

Why it ranks #8: The ready-to-spray formula treats driveways, sidewalks, and other structural surfaces, with results listed in hours and coverage up to 500 square feet.

Three ready-to-spray bottles cover up to 500 square feet each, giving this Lilly Miller pack a clear use case for repeated roof, walkway, or driveway treatments. Its non-staining formula is listed for concrete, roofs, cedar siding, decks, brick, stone, and other structural surfaces.

The ready-to-spray format removes a separate concentrate-dilution step, while the stated 500-square-foot coverage per bottle helps plan where each application will go. The product lists use on sidewalks, driveways, walks, and roofs, including cedar shakes and composition shingles. Results are described as visible in hours, and the supplied guidance recommends application before fall rains or in early spring, so timing the job around moss growth conditions is part of the workflow.

Skip it if you want a dry product covering up to 4,000 square feet; Lilly Miller Moss Out Dry Formula is a granule applied wet or dry.

Choose this pack for ready-to-spray treatment across roofs, walks, and concrete when you value per-bottle coverage guidance. Match the number of bottles to the area, and consider the recommended seasonal timing.

Listed on Amazon as: Lilly Miller 100503872 Moss Out Roofs Walks Ready To Spray 27-Oz (Pack of 3)

#9

9. Wet & Forget 2-Pack

• Form: Liquid

Best for: Multi-area concentrate supply.

Why it ranks #9: This concentrate is listed for sealed concrete and driveways and avoids scrubbing, but requires dilution and dry, mild application conditions.

Two 0.75-gallon containers provide a larger supply of Wet & Forget concentrate for treating moss and related stains on sealed concrete, driveways, patios, and other listed outdoor surfaces. The no-scrub, no-rinse method uses a garden sprayer after dilution.

Mix one part product with five parts water, then apply generously to a dry, debris-free surface with a garden sprayer. That workflow suits buyers treating several areas such as sealed concrete, roofs, siding, and decks without switching products. The directions say not to rinse and to avoid application when rain is expected within four to five hours, so weather and surface preparation affect when the larger supply is useful.

Skip it if you need a ready-to-spray application without mixing concentrate; BioAdvanced 2-in-1 Moss and Algae Killer comes with a hose attachment.

This is suited to buyers with multiple outdoor areas to treat who prefer a diluted, no-rinse application. Make sure a garden sprayer and a suitable rain-free window fit your maintenance routine.

Listed on Amazon as: Wet & Forget Outdoor Moss Mold Mildew & Algae Stain Remover 2x .75 Gallon

#10

10. Blue Bear EBC Cleaner

• Form: Liquid

Best for: Concrete residue and moss cleanup.

Why it ranks #10: The fruit-acid concentrate removes moss and environmental dirt from concrete and hardscape, but its focus also includes lime, mortar, and efflorescence residues.

Natural fruit acids and surfactants target both moss and stubborn building residue, including efflorescence, lime haze, and mortar deposits. This concentrate is positioned for cleaning concrete, brick, pavers, and stone, making it a distinct option when moss is part of a broader hardscape cleanup.

The listed 1:10 dilution for most exterior cleaning gives you a starting point for preparing the liquid before application, while the targeted residue list includes cement film, lime, and mortar residue as well as moss and environmental dirt. Its use on concrete, brick, metal, and natural stone supports mixed-material cleanup. The directions advise testing a concealed spot and protecting plants and adjacent objects with a plastic drop cloth before treating the surface.

Skip it if you want a ready-to-spray product focused on moss killing; Scotts MossEx 3-in-1 Ready Spray connects to a garden hose and kills within hours.

Choose this cleaner when moss removal is one part of restoring concrete or masonry with mineral and mortar residue. Its dilution and spot-test directions suit careful surface preparation, not an instant hose-end application.

Listed on Amazon as: Blue Bear EBC Exterior Building Cleaner Natural Fruit Acid Concentrate 1 Qt