Silly, Link. You’re just adding saliva to the connectors which will inevitably corrode your connections. Either uses a Q-tip with some isopropyl rubbing alcohol or find a different, more creative, solution.
You’re supposed to put your shirt (or tunic I guess) over it first, to prevent all the saliva! Worked like a charm for me as a child :)
I’m going to be “that guy”… the triforce should be upside down for the label to match NES cartridges.