I work a full time job and take care of around 20-25 lawns per season. I have done this for 15 yr, fortunately in that time I have only broken 2 windows which I paid for. I gross 10-15k depending on the weather, I have inquired with my agent for liability insurance they do not provide this.(state farm) What are my best options to protect myself, any ideas on the cost? Thanks in advance.