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St. Gabriel Organics Natural Moss Killer

Part#:
SG400415
Price: $24.99
Regular Price: $34.99


Clear out moss and mildew with this safe and environmentally friendly spray.

Natural Moss Killer helps dissolve away moss, mildew, and other fungal growth. It kills these plants and prevents damage to brickwork, wood, or cement. Moss and mildew can eat away at many different construction materials, so keeping them under control is an essential part of preventative maintenance.

In humid climates, Algae, Fungus, Lichens, and Moss can quickly take over. As they spread across a patio, deck, or roof, these plants can cause unseen damage and unpleasant odors. Stains on the side of a building are often a sign that the wood is rotting away underneath or that the stonework is being eaten away. Treating your deck, roof, or fence posts with moss killing spray will add years to their lifespan.

Get the sneaky plants before they get you! Moss and algae can make walkways dangerously slippery. This treacherous footing is part of their natural protection against herbivores, but it also affects the footing of anyone walking in the area. Nothing spoils a good walk like slipping and breaking a tailbone!

This eco-friendly treatment contains no toxic chemicals and produces no harmful byproducts. It is safe to use around the home, even if you have small children, pets, or other family members who have chemical sensitivities. The treatment will naturally biodegrade over time, and it does not leave residue in the soil that can harm future growth.

This natural herbicide is effective at controlling unwanted growth without poisoning the entire area for years to come. Because it is not persistent, you may need to re-treat the area if moss, lichen, or mildew return.

To keep unwanted growth at bay, treat affected surfaces with this organic moss killer. Simply spray areas where moss or algae are present, and the growth will wilt away. Effects start to show the same day, and most moss will die off within 2 or 3 days.

This 1 gallon container includes a trigger sprayer. The sprayer is included in your order, but it is not attached (to prevent leaks during shipping). To use, change the lid for the sprayer attachment, point the sprayer at targeted areas, and pull the trigger. That's it! A single treatment is all it takes for most species of moss and mildew.

For the best results, use this spray at the same time that moss is growing (during the rainy season) but in between storms. That way, it will be rapidly absorbed but not washed away.

Active ingredients:
  • 4% Clove Oil
  • 3% Sodium Lauryl Sulfate (promotes absorption)


  • Other ingredients:
  • Lecithin
  • Distilled Water
  • Citric Acid
  • Mineral Oil


  • 1 gallon treats approximately 1 acre.

    A few things to bear in mind:
    Do NOT use this spray on copper gutters, downspouts, or other fixtures. It can harm copper finishes. Also, do not use near other plants that you want to keep - many different plants are susceptible to the moss killing reaction.
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    St. Gabriel Organics Natural Moss Killer