Moss grows well in areas with wet soil and plenty of shade. If you don't keep your yard watered well, then moss can spread in a long patch that covers parts of your lawn. Removing moss from your yard can be as simple as manually taking out the moss and then maintaining your lawn so that the moss cannot return. For large patches of moss that need to be eliminated, a few safe herbicide products are available.
Use a rake or dethatching machine to remove the moss from your lawn. Try to get all of the moss you can and dispose of it into a large trash bag. Make sure you wear rubber gloves when doing this.
Purchase a moss herbicide from your local home and garden retailer if moss still remains in your yard. These herbicides often contain a mixture of soap and iron, and they are safe for the environment.
Spray the herbicide on the areas where the moss remains as directed on the label. Wait six hours or longer, and then apply more herbicide until all of the moss is removed.
Seed the areas of your grass that are bare after dethatching and after spraying the herbicide. Use more seed than you think you will need.
Add potting mix, loose soil or sand over the newly seeded areas of your lawn. Make sure the material is weed free and spread at least 1/4 inch thick.
Water the area to keep it moist, and continue to maintain your yard to prevent moss from returning. Maintain the nutrient level of your soil through fertilizing, and make sure that your soil always drains properly.