Oh, I like the idea of the rat zapper. While I don't atm have electricity at the coop, hopefully I will by next winter (so no more lugging of lots of warm water all winter long....hopefully...next winter.)I went all out nuclear. I think I have described my meticulous exclusion approach filling and patching even tiny gaps in the foundation. Then inside I put snap traps out at night (so as not to harm the chickens) and a couple of Rat Zappers which are basically electric chairs that kill instantly.
I caught so many mice in the Chicken Palace that the chickens started to refuse to eat the bodies ‘not mouse steak for dinner again?!’ they complained.
I know you don’t want to kill them and I had that thought initially but found it wasn’t practical. Both the zapper and the snap traps deal a very rapid and humane death unlike glue traps or drowning in buckets.
I haven't made the bucket with can trap yet, but am planning on it. You don't have to use water...you can leave it empty (or a bit of bedding), but then it isn't any 'better' than the mouse catcher you used...just catches more at once.....lots of 'relocations' to do!