The Maryland Department of Human Services is investigating Caroline County Child Protective Services after staff failed to respond this summer to a Federalsburg home where state troopers found two children alone, living in human and animal waste. One child was naked, covered in dirt. Audio from law enforcement’s communications with one another shows troopers were frustrated by the lack of response; one threatened to file a complaint with the state if a Child Protective Services representative didn’t show. Several local officials told The Baltimore Sun that Child Protective Services has been providing “inadequate” responses to after-hours calls from schools and law enforcement for more than a year, putting children at risk and straining police resources.