Glass & Screen Cleaner
Clears the smear a shirt tail leaves behind.
$19.97
Free shipping, and 30 days to send it back for a full refund if it isn't right.
What it's good for
Lifts oil, not just smears
The carbon pad picks up fingerprint oil, which is the thing a dry cloth mostly redistributes.
No fluid
Nothing to leak in a bag, nothing to run out, nothing to take through airport security.
Caps shut
The pad retracts into the body so it isn't collecting pocket grit between uses.