Answer: Unfortunately, I am not certain what to recommend. There are some spray on and granular repellents intended to keep squirrels away from plants but I am not sure if they would deter a squirrel from a person or a sitting area. You could try them, of course, along with some of the deterrents recommended by the Humane Society at the following web page. You will probably need to cut and paste the complete url into your browser to make it work correctly.
Since it approached a person, perhaps you have a neighbor who is feeding them? Perhaps there is a local animal control authority that can help with nuisance wildlife? I hope this helps.
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