The Marty Rat Trap caught my attention. The selling point for this device is that it is used in the leading hotels, market houses, and public institutions. If that wasn't enough to get you to buy it, they have testimonials stating the the Marty Rat Trap will catch rats up to capacity night after night as long as the rats hold out!
If you are intrigued by these traps, check out this really neat site... Mouse Traps.