I forgot to mention something very important when catching kittens and then see willowy said it.
Cardboard piece that goes just to the end of the plate helps in 2 ways, the wire doesn't scare them with their small feet, plus it helps the trap be set off when they step far back on the cardboard.
Cardboard piece that goes just to the end of the plate helps in 2 ways, the wire doesn't scare them with their small feet, plus it helps the trap be set off when they step far back on the cardboard.