I understand how the rat zapper works but once it kills the animal would the rodent not continue to short out the plates while it lays there dead? I have to work during the day so would not be able to immediately dump the trap as suggested..
This was very much a concern during the initial design of these units and is currently a “non issue”. The work around is simple.
Basically once the unit is grounded out, there is a built in timer which is activated. This timer will allow the a specific amount of stored current flow for 1-2 minutes and then it cuts the circuit. This insures the unit does not continue to ground out and shorten the life of the batteries needlessly.
Rat Zapper: http://www.bugspraycart.com/traps/electric/rat-zap-ultra