 In many other states, the mandatory posting of restaurant grades is neither required nor prohibited statewide, which means it is purely a matter for local governments like cities and counties.In November 1997, a KCBS-TV sweeps news story called "Behind The Kitchen Door" focused attention on problems in Los Angeles's top restaurants.The station used hidden cameras to catch restaurant employees practicing unsafe food handling practices such as picking up food from the floor and re-serving it, vermin crawling near food to be served, and mixing uncooked meat and vegetables.