We do not use any gimmicky sprays or chemicals that would harm wildlife. A. Positioning of your bird feeder is very important in keeping squirrels away. Squirrels can easily jump 10 feet from a fence or tree. You need to position your feeder where squirrels cannot jump to it. You can try feeding the squirrels at a different station.
Some people use a bird feeder with a baffle on it to prevent squirrels from getting into it.
I am going on vacation. If possible, you can have someone fill your feeder while you are gone. If your feeder does go empty, the birds will return within a reasonable time after you begin to fill your feeder again. The store I have been buying your products from no longer carries them. We encourage you to feed birds year-round.