Been doing these apartments for this guy for 4 years. Mow, bill, no problems. Well, I send out the first invoice of the year ( same price per cut as it's been for the last 4 years) and he calls me and leaves a message on my machine saying he's going to mow it himself. I have this visual in my head of this 70 year old guy using a push mower and holding his O2 tank in the other hand!!! What really gets me is that he's grossing over 12 grand per month on these units and I'm charging him $120/month to mow. Oh well, just hope he doesn't have a heart attack while mowing!!!!