We do a yard today and while we are blowing leaves on the customer's side the neighbor tells us the leaves on his yard are our customer's too. He and she tells us that we should get them off of their yard. I refused telling them what falls in their yard is their's. These people tell me they will be in our customers yard one way or another. I informed the customer and he said he would pay us extra to pick them up. Who is right o this issue? If their attitude would have been better I would have done it but they were demanding.