Ground squirrels are a HUGE problem around here. Their mounds, hidden in tall alfalfa for instance, tear up a lot of equipment. Some of the big farms around here offer a bounty of $1 a tail and invite shooters to come out and shoot all they want. They even put ads in the paper, asking people to come out and shoot the darn things. I also see workers out using the propane injectors in the fields.
Every year, early spring, I mount my box scraper on my tractor and go out and level out those mounds as best I can to make mowing easier come June. (The squirrels come out right around Christmas, and then disappear - hibernate - around the 1st of July. It's not unusual for me to sit in my Jeep with my .22 and shoot 100 at a sitting, yet it doesn't seem to hurt the population at all.
Early spring photos of the mounds. I bet there's 100 holes per acre if not more.
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Some of the mounds can be huge - who'd think a tiny squirrel could move that much dirt?
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