no amount of killing you can do will make any meaningful dent in the population of a rodent. there are millions of these things and they have up to eight offspring at a time. the gestation period is only 44 days. any squirrels you can kill just free up food and resources for more squirrels. so unless you have a hyper-resistant ubermensch red squirrel breeding facility under your house, you're pissing in the wind, killing wildlife for no reason.
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