Last year, my daughter got me a bouquet of Canterbury bells for mother's day and I was amazed at how long the blossoms lasted so I picked up a pack of seeds to try and grow this year (although I don't remember exactly where I stored them for keeping). Being reminded of them, I just searched them to see how easy they will be to grow and one of reasons offered of 'why Cantebury bells are easy to grow' is that they are 'resistant to deer and rabbits' so I wonder if they have the same effect in regard to squirrels

. However, in continuing to scan the their characteristics (I'm gathering a list of edible flowers that I can candy and use for dessert garnish), I learned that, while they are non-toxic to dogs, they are 'particularly harmful to cats' so that idea is now files in the discarded notions bin.
But searching 'squirrel repellant,' the engine retrieved some scents that squirrels supposedly dislike: peppermint oil, garlic, Cayenne pepper, and Irish Spring soap, and another article claims they don't like the scent of coffee either.