Thanks, I've only had to consider this once. I had a booking for a 30 day stay. The guy was a bit flaky right from the start, several times wanting to change the dates etc and also changing the story of why he was renting. Originally it was for himself and spouse and mother in law. When the dates came he came alone, with no one else. In retrospect I suspect marriage problems. Anyway, after a few days he started complaining that he was getting headaches from all the cat dander! There has never been a cat or any animals ever in the unit and I politely let him know that. So then he says that is even more worrisome because it must mean the house is infested with mold. Again, no way possible. I sensed he was wanting out of his commitment and he was flaky enough that I didn't want hassles or false bad reviews or anything so I preempted and said if the house isn't to your satisfaction here is an offer to cut your visit short and he took it and checked out. I am actually glad I did. I haven't had problems with anyone else since and it seems to get steady rentals and use.