• You can use the chemical glyphosate to help control your lawn moss.moss image by daki from Fotolia.com
  
  Iron sulfates, copper sulfates and lime can help you chemically control your lawn moss. A chemical called glyphosate, found in the product a variety of herbicide products is helpful in controlling moss. However, some chemicals can stain or discolor anything they come in contact with, so care should be taken when apply this products.
  
  

Glyphosate

• Glyphosate is one of the more common herbicides used today, according to Oregon State University. The chemical is used in moss removal, but is not always effective. One theory behind why glyphosphates sometimes fail to kill moss involves how the herbicide works. This chemical works by being absorbed through a plant's leaves, and is then bound to the soil beneath the plant. Any nearby plants that are competing for nutrients from the soil, tend to absorb most of the glyposhpate and subsequently die, leaving the moss untouched.
  
  

Ferrous and Ammonium Sulfates

• Iron (ferrous and ammonium sulfates) and copper can kill moss without harming the environment, because these elements are essential in the growth of other plant life. Using iron to kill moss also will not hurt grass.
  
  Combining thee ounces of the chemical iron sulfate with five gallons of water. This mixture is enough to treat up to 1,000 square feet of moss-covered ground. You can also purchase ready-made products like Moss-Out (ferrous ammonium sulfate) instead of mixing your own, but this particular over-the-counter product can discolor your concrete driveway and sidewalks, if sprayed onto them.
  
  But iron is not always successful in totally killing moss. Sometimes iron just burns moss, weakening it.
  
  

Copper Sulfate

• Mix two to five ounces of copper sulfate for every four gallons of water to treat up to 1,000 square feet of moss. Copper sulfate, however, will likely stain your hands and your clothing and can be caustic to metal, so be sure to mix it in a plastic container. Iron and copper can be used to successfully control moss, but if you want to be rid of your moss for good, you will need to treat the underlying conditions that favor its continued return.
  
  

Lime

• If moss is growing in your lawn due to lawn soil acidity (pH level below 6) then lime may be beneficial in treating your moss problem. High pH acidity in soil can damage your grass health since it binds up soil nutrients and thus limits yours grass' ability to absorb them. Once grass begins to die or suffer, moss can become a problem. Limestone neutralizes acidic soils, especially calcium-based lime, improving the health of your lawn and its ability to compete with moss for soil nutrients. But a soil test is needed first, to make sure your pH level is acidic. If your lawn has a pH of 4 or 5, you will need to apply lime two times during the grass growing season.