I am surrounded by neighbors with rats that do not control thier livestock feed. So the rats run between our properties. They are tunneling rats so they undermine everything. I have chickens and dogs so I try and limit the poisen. So far I have tried: 1. Standard trap with peanut butter 2. Jaw traps with PB and rat attract 3. flares 4. bait poisen down holes 5. oxy/propane blowing (2 weeks) 6. Every type of mole trap made 7. poisen chunks thrown into the wood pile 8. Cat (fail) 9. dogs (fail) 10. Baited bucket fall trap. Works great for mice. 11. snares I had great initial success with the standard and jaw traps, now they dont care. There is an occasional leg I find in a tripped one but that just tells me it is in the way of whereever they are going to feed. I need a new good bait. I dont blame the cat for not catching any of these by the way. They are 2/3 his body weight. My record size is 17 inches nose to tail. The body of these rats is the length of a shovel head. I can post a pic if need be. I never would have thought a rat would be that large. In any case, if you have any tips n tricks, old timers especially, please chime in. I am open to anything legal.