Since then I use sticky traps in places other animals can't get into.
Glue traps are horrifically cruel -- the mice die of starvation and dehydration. They are vermin, but we have no right to make them suffer.
Snap traps are the swiftest and most merciful.
Poison can be used in a safe and careful fashion and some kinds are not dangerous to pets.
@Thanera What does your run look like? Do you have it wrapped entirely in hardware cloth with either an anti-dig apron or a trench burying hardware cloth 12" down? Find the way the mice are getting in and block it off because that same 1/2" gap could admit snakes and weasels.