Baltimore among top 20 cities for bed bugs

Get ready to start scratching.

Baltimore continues to be among the top 20 cities for bed bugs.

Charm City ranks No. 20 on Orkin’s 2012 list. Baltimore did improve, however, from No. 18 on the pest control company’s 2011 list.

The cities are ranked in order of the number of bed bug treatments Orkin performed from January to December 2012,

Chicago took over the top spot, followed by Detroit, Los Angeles, Denver and Cincinnati. Washington, D.C., moved up one spot to No. 7.

Salisbury dropped…