I would ask a pet store for soiled mouse bedding. If you are using F/T just thaw out your rodent with the soiled bedding. That will make a rodent smell delicious to a snake. Make sure you are heating up your rodent enough as well as feeding at night. Both of these will raise the chances of your snake feeding effortlessly. All of mine eat whenever I try to feed, but when I have acquired a new snake I generally feed at night. They are more alert and it's when they feed naturally

Good luck!