Service agreements help needed

I have a friend who just started a small home cleaning business and is having issues with customers following guidelines. The first thing that came to mind was drawing up a contract for all scheduled clients in order for them to follow guidelines. Does anyone know a good source to download such contracts? If so what would it be called?

Also I own a small lawn care company and would like to draw up a contract for regularly scheduled clients. So anyone help with one or both would be great. Thanks!