Once a year I spend a few days chasing California quail in the hills near Kelso Valley in central California. We stay in a cabin that's over 100 years old and has no electricity or running water. The cabin is unoccupied many months of the year. Rats chew their way into the cabin and destroy everything in sight. Regular rat traps would kill the first few intruders but were then disabled until the carcasses of their former victims had been removed and the trap reset. The cabins owner built three of the most ingenious perpetual rat killing machines that continue to exterminate the little beasts for months on end. He purchased a number of 5 gallon plastic buckets at Home Depot, drilled two holes near the top opening of the bucket so that a coat hanger wire could be stretched across the center of the top opening. A small hole was punched through both ends of an empty tin can and the wire passed through the two holes so that the tin can would spin freely like a rolling pin. The coathanger wire was bent so that the can would stay in the middle of the bucket opening. The last part of the trap consisted of a 3 foot long section of 2 x 4. The 5 gallon bucket is filled halfway up with water, the tin can is smeared with peanut butter, and the 2 x 4 is set against the bucket to act as a ramp up to the top. Rats would run up the 2 x 4 to get to the peanut butter which must smell pretty good to a rat. Standing on the edge of the 5 gallon bucket they would make the easy leap to the tin can that would spin as soon as their body hit it dumping them into the water in the bucket. Evidently the sides of a 5 gallon plastic bucket do not offer enough traction to allow a rat to crawl out so they swim until they run out of energy and then expire. The only down side to this trap is the sight of a dozen dead rats floating in the water when you show up at the cabin. :eek But it does appear that the first thing a rat will head for when it invades a dwelling, is peanut butter. With those traps in the cabin not much else seems to get touched. :thumbsup
Chip