Nah. They do work, but they get lost. Like PB PM said, a case with a built-in port cover is best if you want something. I don't use anything, and just clean out my hole a couple times a year.
But don't tell anyone that. 
- AppleNova is the best Mac-users forum on the internet. We are smart, educated, capable, and helpful. We are also loaded with smart-alecks! :)
- Blessed are the peacemakers, for they shall be called sons of God. (Mat 5:9)
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