Oxygen Sensor Clean Up

Gentlemen, have a 2002 GT. I just received 2 Motorcraft front oxygen sensors which are in plastic bags. I noticed, that what I'm sure is anti seize, is all over the inside of the bag and therefore on the tip. Wondering if I should clean off the tip with carb or brake cleaner or just install them. Don't want to damage the tip or put in a crapped up sensor.
Thanks in advance,
Lonestar1
 
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