Well, I heat it in a container of warm water in a ziplock baggie,Then I shoot it with my temp gun. try to get it around 100. I try to shake it ever so slightly with my feeding tongs along the mouses back and not its tail. Ive tried leaving it in her hide at night, lol ive bought more F/T mice that ive wasted than live mice probably. maybe i can upload some pics or a vid so you can tell me what im doing wrong, if its live the mouse is in her feeding enclosure for like 2 seconds and its bam(no more mr. mouse). I havn't tried the paper bag trick yet but i really dont think its gonna work(putting a F/T mouse and a bp in a paper bag and stapeling it shut overnight.) i read it on another forum somewhere but i'm afraid she wont be able to breath in there. any suggestions?