Then these will definitely become your new BFF.
Just pop out a pre-moistened towelette and get to work wiping the day off your mug.
You don't even have to turn on your faucet.
It takes everything off and saves you a few minutes in the process.
I don't use mine every night, just for those times when I just can't bring myself to do the whole cleanser-washcloth-water thing.
For that, it's totally worth the $6 price tag.
Find them at your local Target store.