Pulled up to a 3 acre residence on the river and upon walking the grounds before cutting I discovered several large areas of fireplace ash dumped in numerous spots around the lawn. There was no way to really mow around the various piles without making my stripes all crooked so I instructed my employees to mow through it resulting in a very large cloud of dust. This stuff was like talcum powder, I mean just plain awful. We pulled the precleaners off the air filters and replaced them with fresh ones upon completion of this job. I politely explained that she should dump her ashes in the garden or anyplace else besides the lawn due to the ammount of dust it creates is not good for my equipment. She assured me that she would do so next time she cleaned out the fireplace. Well I guess she forgot or said screw the lawn guys because the same thing happend again two weeks later. When I inquired to her the second time she said it should be ok because the sprinklers watered it in. My question to you is should I charge this lady for replacing air filters on the mowers, or just hide it in the cost of my fertilization or other services we provide to her account? I'd really like to tell her to fly go fly a kite but she is a $500+ monthly account, thanks!