i've lost jills to rats but only in large rat sets they can get beat up a bit mind ,smoker and dogs is the best really , the best smoker i have seen is a small two stroke silent run suitcase generator it was fairly light and very quiet you could hear the rats bolting and the dogs didn't seem to miss much with that as with the chainsaw or strimmer type are loud and some long tails can slip away the advertised smokers that i have seen in action are no good