The dirt spots are so frustrating. When I finally was able to purchase fertilizer I was so happy because I thought that would solve the dirt spot problem, like it does in real life. But sadly it solves nothing and left me disappointed. I know that running in your town will make the spots worse and they won't recover until the spring starts again. I hope in the next version they give us a way to fix the spots. It really hurts when your trying to make your town beautiful to have those eye sores all around town.