How can I keep squirrel out of my bird house?

Answers:
I have feed birds for some time now and I just put out extra for the squirrel. When I put bread out, he pretty much leaves the feeders alone.

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If you have a bird feeder on a pole or post this can be pretty effective: apply a coat of petroleum jelly to the pole or post that your bird house or feeder resides on. Squirrels won't be able to climb the pole or post.

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After battling this issue for some time, I finally gave in, spent the extra money and bought a squirrel proof feeder. There are many styles to choose from. The squirrels still try but they no longer are able to empty the thing daily. Same issue with raccoons.

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get a bbgun