My neighbor's kids used to mow my lawn for a fee. Last year I told him I would be taking care of it myself from then on and I bought a lawnmower. But each week, if I don't get out and mow my front yard before about noon on Saturday, he'll have his kids do it and then he will trim and edge and occasionally, even water. He has not asked for any money and I have not offered. I prefer to do my mowing in the evenings when it's cooler, but frequently I will come out to the front yard with my mower on a Saturday afternoon and find him already mowing it. I have made subtle hints about the situation but haven't made a huge deal out of it. I think he does it out of generosity but am not certain. For a while I thought, if he wants to do work for free, let him, but now I am wondering what the legal implications are. Can he file some kind of claim against me or something?
P.S. I am not a slacker, it's just that I prefer to choose for myself what day and time I do my yardwork and he doesn't wait.