A shield for biasingly self-attaching to a duplex electrical receptacle in a wall without having to be plugged into the duplex electrical receptacle or having to enter the wall and for completely concealing the duplex electrical receptacle to completely hide and thereby protect the duplex electrical receptacle from paint when painting therearound. The shield includes a shell. The shell is generally rectangular parallelepiped shaped for biasingly self-attaching to the duplex electrical receptacle in the wall without having to be plugged into the duplex electrical receptacle or having to enter the wall and for completely concealing the duplex electrical receptacle to completely hide and thereby protect the duplex electrical receptacle from the paint when painting therearound.