It is our standard policy to maintain our machines on a scheduled maintenance program. First and foremost, the safety of our employees, clients and the general public is of the utmost importance to us. Secondly, we make sure our machines are well-maintained to extend their life and to ensure that we maintain high quality lawns. We change the oil, and lubricate at least twice per month. We change spark plugs and overhaul each machine at least twice per year. At Perfect Landscapes, keeping a sharp cutting edge on our mower blades is paramount. During the spring, we sharpen our blades everyday. Our blades are sharpened at least once per week at all other times during the season.