Correct me if I'm wrong, but the mice in this guy's videos are all tame, or at least used to being trapped repeatedly, aren't they? I feel like it'd be far easi

Correct me if I'm wrong, but the mice in this guy's videos are all tame, or at least used to being trapped repeatedly, aren't they? I feel like it'd be far easier to "trap" the mice after having repeatedly exposed them to several different types of trap. I'd like to see this trap work in a few completely new environments. Edit: just noticed the later part of the video he says the trap catches "wild mice in the barn". Still unsure if these mice have been caught in his other traps before, though.