Any advice on keeping out squirrels from our bird feeder?

We have a bird feeder attached to our family room window. We love it because we can watch the birds come and go. But the pesky squirrels love to get in there too. I was told to put red pepper flakes in the food because it doesn't bother the birds but the squirrels will stay away. That doesn't work. We have a catch and release trap that we use. Any other suggestions. The pesky one this morning broke a flower.
q help the squirrels are driving us crazy
  7 answers
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