I HATE them too! For years they were the bane of my garden. I had a colony of ground squirrels living in an embankment behind my back wall. At first they just climbed up the bricks to help themselves to a meal. They would pull out a fruit or veggie and take ONE BITE, and then set it down and grab another. Finally they all got so fat that they dug a "super highway" tunnel all over my back yard down to their embankment nest so that they wouldn't have to bother with climbing the wall anymore. They destroyed the root systems of my well established plants and killed my passionfruit vines!
I finally started trapping them and I was getting one a day for over a month and I thought that I had killed them all since I didn't see them anymore, but I just found out from a neighbor who works for the city that they have been poisoning them. Apparently our neighborhood was besieged by them, not just me, and someone's dog got very sick with some strange disease after it bit one so they decided to do something for public health reasons.