Wife put one of those sticky mouse traps in the storeroom the other day and caught a 12" guadar. (Western Brown snake) Just a baby but still deadly. So thats where the mice went.
Well, I think if we are talking humane, the only thing would be live trapping but that's just throwing your problems on someone else. Quick, clean (relatively) and painless. . . SHOOT 'EM!!!
THAT'S IT!!! Send over that Western Brown snake to keep in Nickk's garden. That'll knock the crap out of those rats!
I had a garden in Acton that was full of Kangaroo rats and mice.
We used to put 5 gal. buckets in a hole in the ground with a few inches of water in them.
The mice would fall in trying to get to the water and drown.
We had to empty the buckets every morning.
Some were so full of mice that a bunch of live ones would be on top of a raft of dead ones that were dead and floating.
Killed literally thousands of mice but still ended up giving up trying to grow anything.
Too many mice eating up the plants.