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Ann, Have you tried usingAnn, Have you tried using essential oils. Specifically peppermint oil. Fill a pump up sprayer with partial water, then the rest with partial peppermint. Shake it up, spray it on the tree (it's a "GREEN" thing, no poisons)and see if the scent doesn't drive them crazy. The peppermint will not hurt your pecans, and after awhile the squirrels will leave it alone