 You're listening to WTOP. WTOP News. Facts Matter. 523. They're running through streets, alleys, and if you're unlucky, well, through your house as well. WTOP's Scott Gelman says property managers and city workers are learning how rats behave and how to keep them away. Go find the rats. Here near George Washington University's campus, groups of D.C. residents and workers are searching parks for holes that rodents may be using to get around.