My lawn care service recommended that I put down peat moss on the bare spots of my lawn and this should encourage the grass to spread and fill in the bare spots. Do I need to do any prep work before laying down the moss?
How Does Putting Down Peat Moss Promote Grass to Grow?
The peat adds organic matter to the soil, and increases water holding capabilities. This article will tell you more: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/peat-moss-information.htm
You might dig up the soil a bit (1/2 - 1") on the bare spots, then put down your moss, put a little soil on top of it, then water will, the purpose being to keep the peat from blowing away.