I place them in a ziplock bag and submerge them in hot water. I usually wait 15 minutes and then replace the water with more hot water; 5-10 minutes later and I'm good to go. At the same time I have my live mice prescenting the room (I have one live feeder) and then when I offer f/t everyone is usually ready to go. If for some reason I get a snake that seems interested but doesn't strike then I give the mouse a little blast with the hair dryer and that usually does the trick as well.