I talked to a guy that I used to work for today who wanted to buy some mixed hardwoods for his son who has only Applewood to burn this season in New York State. He said that he was "concerned" that burning only fruitwood would "mess-up" his chimney. As I recall, he and I talked about this same thing a few years back when I delivered wood to him. I've noticed in the past other people who are "convinced" that they had problems because it was Ash or Oak or Cherry when in fact the wood probably wasn't seasoned and who knows what their chimney was like to begin with. Anyone else here ever run into people who are "convinced" that it was a certain species of wood that was bad and they'll never use it again?