What's a pet-safe way to kill moss in my lawn?


I'm glad you've already done the homework, and you know about maintaining a healthier stand of grass in the future. To knock the moss back now, you may consider chemical control. This page about chemical control of moss in lawns was written by some OSU experts, but be aware that glyphosate will KILL your grass. Iron sulfate (or ferrous ammonium sulfate) may be a good option, as long as you follow the label directions closely. You would look for this chemical on the product label, listed as the active ingredient.

To minimize risk to pets, follow label directions and minimize their exposure. After granules or sprays have a chance to break up and penetrate the soil (or moss layer!) - there is a lower potential for exposure to the pets. However, iron and sulfur are low in toxicity at low doses.

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