Q: I’m a softball coach at Georgia State University. Our back stop netting at our softball facility has developed a “fungus” on it. This growth is starting to cover the entire netting area.

A: What you see is nothing more than lichens growing on the net. They typically grow on tree trunks, where they do no harm……but I can see why you want to get rid of them.

Lichens are a combination of an algae and a fungus. You can spray with a light solution of bleach and water and I believe they will disappear pretty rapidly.