Molotov cocktails (found the petrol so it's free), filled up plastic soda bottles with bug spray, closing them up quickly and burn them (they explode quite nicely, do try it at home) and cooked a few rats alive. Old house was infested with em. I used trupentine for the rats. I had to save the gas for the weed whacker. Said rats were fed to cats. And i burned a whole pressurized fire extinguisher can. Good times, good times.