WESTBORO— What some residents of Fountainhead Apartments thought was a pet’s urine in the elevators turned out to be that of one of their neighbors. Residents of the Route 9 apartment complex continually complained to management of smelling urine in the two elevators. After about 30 incidents over a four-month period, management contacted a crime prevention agency and arranged to have a hidden video camera installed in one of the elevators. Police said that within a month, the camera captured Alicio Marcio Camargo, 26, urinating in an elevator on four occasions. One of the incidents happened minutes before midnight on...