I filled it with hot water once last winter. My dogs wouldn't use it (lol) It's used, but as mentioned above, it's practically like new. Of course, there are no scratches or stains, and it's in beautiful condition. I'm selling it at a low price to someone who can use it for dogs that feel the cold or for nursing elderly dogs! I also have new hot water bottles for sale, but if you're buying multiple items, such as for multiple dogs, I'll discount the shipping cost, so please comment.