I have heard it said that sunflower seeds, supplied in sufficient quantity will bloat and kill rodents ..... ? I am not convinced but at least there would be no secondary poisoning. Peter (UK) Searching for alternatives I came across this new product: Terad3 with > Cholecalciferol as active ingredient produced by Bell Labs. (They call it > Vitamin D3??) They claim, low toxicity to birds from secondary poisoning by > consuming poisoned rodents. > > Rich Haard > Bellingham, Wa. > > > >