Yea you can get a pair of tongs to wiggle it in front of them so that way its easier for their "heat sense" to target the mouse/rat and not your hand haha. The "wiggling" youre describing is the exact same thing that people are calling zombie dancing. Zombie dance means wiggling the f/t rodent in front of them.
I got my tongs from Reptile Basics. Rich is an awesome guy to do business with and will get your order to you FAST.
I got the 12" hemostats which is plenty big for feeding bps.
http://www.reptilebasics.com/husbandry-stainless-page-4