I used this item for about three months after purchasing it new, and then stored it. I tested its functionality by putting water in it before listing it, and it worked normally. There are no noticeable scratches or stains. I will clean any dirt I can see, but please understand that this is a used item. <Included Items> Condensation tray Cooling tank You can find the instruction manual by searching for the model number online, so please refer to that for usage instructions. Since I don't have the original box, I will pack it in a suitable cardboard box for shipping. Thank you.