I was unable to find someone in SoMD, but I did find Service Photo in Baltimore. They'll do a same-day cleaning for $99.99 or a next-day cleaning for $69.99. I didn't end up using them - it was a work camera and we ended up purchasing a new camera body for other reasons. But I spoke with the Repair Manager Lauren over the phone a few times and she has been cleaning all kinds of cameras for over 30 years. They were the closest I could find without having to go into DC. The only other place in DC is Pro Photo. You're looking at a drive no matter what http://servicephoto.com/