The first female that I got would not touch f/t mice or rats. She still won't. I tricked her into eating one once, and only once. She went for over a month without eating when I first got her, as a tiny worm, and as soon as I offered her a live mouse she nailed it. Your BP at 10 months old can probably handle adult mice just fine - but if you want to get him to eat, you may have to break down and feed live. Just supervise to make sure he kills it. Some BP's just won't eat F/T.

How much does your BP weigh? Photos?