"The other breeders do vacuum pack and that is okay, but what happens when you open a bag?. I have not had a problem at all with the way RodentPro bags their product"
You are correct. As soon as you open the vacume packed bag, then there goes any advantage that the sealed bag gave you. BUT, what happens if you still have about two weeks worth of rodents in the freezer? Or even three weeks left before you deplete your old supply. That's where the vacume sealed pack would be a huge advantage. I think for some folks the vacume sealed would be an advantage, and for others would make little to no difference at all. Both are top notch companies.
Steve