Oh man, I absolutely cannot stand those MFers! They took most of my nectarines, peaches, longans, cherries, and dug holes all over the yard. A few years ago, Home Depot used to sell this blue poison, I just placed it in a few dishes around where they are, within a few days, all gone. The following months, no trace of any damn squirrels. I think the blue stuff has been outlawed, as I cannot find it anywhere. There was a thread here recently, showing the Rat Zapper to work great with squirrels. I just got one, will see how well it works. I thought the Rat Zapper only works on rats and mice, but apparently some people said it kills squirrels too.