There is a simple wash tub size trap where the rats climb up the plank to get some food, it has a hinge and trips on their weight. They drown in the water. Multiple kills!
There is a simple wash tub size trap where the rats climb up the plank to get some food, it has a hinge and trips on their weight. They drown in the water. Multiple kills!
We used to call those "Cabin traps". Five gallon pail with 6" of water in the bottom. Put a soda can wiped in peanut butter lengthwise on a cross wire through the rim of the bucket and a little plank from the floor to the pail rim. They climb up, reach for the can - which spins - and fall they into the water. They eventually tire out from treading water. Until enough carcasses make a "raft".
one change needed. instead of just a bucket, it needs a funnel and an electric grinder for them to land in.
if not for the smell, I'd suggest acid in the bottom of the bucket