Best Moss and Algae Killers Updated May 2025
Advertiser disclosure About our rankings

Join the millions that have trusted BuyersGuide.org to help them make smarter buying decisions. Let our independent expert reviews and data-driven shopping recommendations help you find the one that's right for you.

Best Moss and Algae Killers
2025 Buyer's GuideUpdated May 2025
Advertiser disclosure About our rankings
Sort by:
Best Moss and Algae Killer

10.0

1

10.0

Scotts MossEx 3-in-1 Ready Spray, Kills Moss, Algae and Lichens, Fast Acting, Use on Lawns, Roofs, and Patios, 32 fl. oz.
Ease of use
Speed
Product quality
Best Moss and Algae Killer

10.0

1
Scotts MossEx 3-in-1 Ready Spray, Kills Moss, Algae and Lichens, Fast Acting, Use on Lawns, Roofs, and Patios, 32 fl. oz.
Ease of use
Speed
Product quality

9.9

2

9.9

Wet & Forget Outdoor Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Cleaner, Ready to Use, 64 Ounce
Ease of use
Looks good
Save 13%
Save 13%

9.9

2
Wet & Forget Outdoor Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Cleaner, Ready to Use, 64 Ounce
Ease of use
Looks good
Save 13%
Popular

9.7

3

9.7

Scotts GrubEx1 Season Long Grub Killer, Protects Lawns Up to 4 Months, 5,000 sq. ft., 14.35 lbs.
Effectiveness
Kills grub
Insect control
Mole control
Ease of application
Grass health
Read Full Review
Save 31%
Save 31%
Popular

9.7

3
Scotts GrubEx1 Season Long Grub Killer, Protects Lawns Up to 4 Months, 5,000 sq. ft., 14.35 lbs.
Effectiveness
Kills grub
Insect control
Mole control
Ease of application
Grass health
Save 31%
Read Full Review

9.5

4

9.5

API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)
Effectiveness
Algae control
Water clarity
Water quality
Ease of use
Pond health

9.5

4
API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)
Effectiveness
Algae control
Water clarity
Water quality
Ease of use
Pond health

9.3

5

9.3

Natural Armor Weed and Grass Killer All-Natural Concentrated Formula. Contains No Glyphosate (128 OZ. Gallon)
Safety
Ease of use
Environmental protection
Save 17%
Save 17%

9.3

5
Natural Armor Weed and Grass Killer All-Natural Concentrated Formula. Contains No Glyphosate (128 OZ. Gallon)
Safety
Ease of use
Environmental protection
Save 17%
Premium Pick

9.2

6

9.2

30 Seconds Outdoor Cleaner | Cleans Moss & Algae Stains from House, Vinyl Siding, Deck, Patio, Fence - 3 Capped Bottles, 1 Hose...
Functionality
Cleaning power
Ease of use
Speed
Mold removal
Premium Pick

9.2

6
30 Seconds Outdoor Cleaner | Cleans Moss & Algae Stains from House, Vinyl Siding, Deck, Patio, Fence - 3 Capped Bottles, 1 Hose...
Functionality
Cleaning power
Ease of use
Speed
Mold removal

9.1

7

9.1

BioAdvanced 2-in-1 Moss and Algae Killer for Lawns, Roofs, Patios, Decks, Roof Moss Killer, Deck Cleaner and Mildew Remover, 32...
Ease of application

9.1

7
BioAdvanced 2-in-1 Moss and Algae Killer for Lawns, Roofs, Patios, Decks, Roof Moss Killer, Deck Cleaner and Mildew Remover, 32...
Ease of application
Best Value

9.0

8

9.0

Ortho GroundClear Weed and Grass Killer with Comfort Wand, Kills Dandelions, Chickweed, Crabgrass, Moss and More in Patios and ...
Effectiveness
Ease of use
Battery power
Save 17%
Save 17%
Best Value

9.0

8
Ortho GroundClear Weed and Grass Killer with Comfort Wand, Kills Dandelions, Chickweed, Crabgrass, Moss and More in Patios and ...
Effectiveness
Ease of use
Battery power
Save 17%

8.8

9

8.8

Green Gobbler 20% Vinegar Weed & Grass Killer | Natural & Organic | Concentrated | 1 Gallon Spray | Glyphosate Free Herbicide
Effectiveness
Kills weed
Safety
Ease of use
Natural ingredients

8.8

9
Green Gobbler 20% Vinegar Weed & Grass Killer | Natural & Organic | Concentrated | 1 Gallon Spray | Glyphosate Free Herbicide
Effectiveness
Kills weed
Safety
Ease of use
Natural ingredients

8.7

10

8.7

Bonide MossMax, 32 oz Ready-to-Spray Control for Algae, Moss and Lichens, Outdoor Home and Garden Use, Nonstaining Formula
Save 5%
Save 5%

8.7

10
Bonide MossMax, 32 oz Ready-to-Spray Control for Algae, Moss and Lichens, Outdoor Home and Garden Use, Nonstaining Formula
Save 5%

Our Top Choice

Best Moss and Algae Killer

10.0

1

10.0

Scotts MossEx 3-in-1 Ready Spray, Kills Moss, Algae and Lichens, Fast Acting, Use on Lawns, Roofs, and Patios, 32 fl. oz.
Ease of use
Speed
Product quality
Best Moss and Algae Killer

10.0

1
Scotts MossEx 3-in-1 Ready Spray, Kills Moss, Algae and Lichens, Fast Acting, Use on Lawns, Roofs, and Patios, 32 fl. oz.
Ease of use
Speed
Product quality
Related Categories
Moss KillerNon Toxic Weed KillerWeed Killer for Rock BedsNatural Weed KillerWeed and Grass KillerWeed Killer for Lawn
How We Rank
Expert Analysis
Our team of experts highlights useful information so you can easily compare products to find the one that's right for you.

Award-Winning Tech
Our technology analyzes thousands of purchase trends to bring you the top product recommendations.

Why Trust Our Reviews?
1,000,000+ shoppers use Buyer's Guide every week to find the best products and services online.

Learn more about our rankings.

Reliable, Safe & Secure
Helping millions of users make smarter purchases online.
Related Categories
Moss KillerNon Toxic Weed KillerWeed Killer for Rock BedsNatural Weed KillerWeed and Grass KillerWeed Killer for Lawn
Related Categories
Moss KillerNon Toxic Weed KillerWeed Killer for Rock BedsNatural Weed KillerWeed and Grass KillerWeed Killer for Lawn