(Beaverton, OR)  --  Police say a couple and their two children lived in squalor in a camper parked near a Beaverton apartment complex for months.  Thirty-three-year-old Sarah K. Clark and 34-year-old Marcelino Navarro, Jr., who own the camper, are facing multiple counts of criminal mistreatment.  Police say the couple lived for nearly a year inside the camper with their seven- and 12-year-old children, even though it was filled with garbage and feces.  The children are now staying with a relative.