When it comes to maintaining a healthy lawn, it's important to keep unwanted moss at bay. Moss can take over a lawn and leave no room for desirable grass to grow. One of the best moss killers for lawns is iron sulfate, which not only kills the moss but also provides essential nutrients to the grass. However, moss also has its benefits for human health. Certain species of moss have been found to have anti-inflammatory and anti-bacterial properties, and are being researched for potential medical applications. Overall, while moss may be a nuisance for lawns, it's important to recognize its potential benefits for human health.