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Unplug it, use Q-Tips and rubbing alcohol (don't drink it) to clean it. What a few hours then use it again. Its what I do.
 
You can clean it with water too if you'd like as long as you dry it completely before using. I'd go with alcohol though, since it dries quicker.
 
that rubbing alcohol trick sounds like the one. i'll give that a shot in due time.
 
that rubbing alcohol trick sounds like the one. i'll give that a shot in due time.

TBH, my magsafe connect has stayed clean throughout the 4.5 years I've had my MBP. I've had to clean it and it hasn't given me any issues thus far.
 
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