I hope you watching the tank while the mice are in it. You should never leave live mice alone with your BP. It's not a good practice to learn even if they're pinkies and can't hurt your BP. Google what happens when mice start chewing n snakes... It's not a pretty picture.
Also, your thermometer is not doing you any good being so high. You ahould put it on the same level where your BP is so you know the temps and humidity down there. I'd replace it completely and get a digital thermometer/hygrometer.
Something like this:
Sent from my SAMSUNG-SM-G920A using Tapatalk