We are taking a little vacation and will be away for about 4 days. This means our cat might be on his own during that time. My concern will be, is this bad for him and he will act up during his time alone? Am I going to come home to shredded sheets and towels? He has a cat fountain water bowl that holds 100oz of water and it is constantly being filtered and a 5 day auto meal thing so those two things wont be a problem. Thanks in advance.