I read about a mouse trap once in a hunting mag, it should work with rats. Take a 5 gallon bucket and attach a wooden dowl across the top of it. Take an aluminum can and make a hole in each end and sleave it over the dowl. Now take some peanut butter and smear it on one side of the can. Leave a small board as a "gang plank" to make it easy for the bastards to get to the peanut butter. The theory is the mice (rats) get up on the can and eat the peanut butter and it rotates under their weight and they fall into the bucket. Oh yeah put some water in there and DROWN the bastards at the same time.
