The home we bought is 5 years old. The lawn is so irregular that when you walk on it, you could almost sprain your ankle. They're all over the place. Do I just try to spread dirt? Organic material? Can I use my broadcast spreader? Will I need to overseed or will the grass grow through the dirt? It's the end of February now and I live in Utah. Should I aerate then do it around March? THANK YOU ! THANK YOU!