Raid Flying Insect Killer is specially formulated to kill a number of flying insects: non-biting gnats, small flying moths, wasps, boxelder bugs, Asian lady beetles, flies, fruit flies, hornets, mosquitoes, and yellow jackets. This insecticide spray for flying insects kills on contact and can be used both indoors and outdoors. This effective bug killer also leaves no lingering chemical odor. To kill multiple indoor flying bugs, spray until room is thoroughly misted and mist will kill bugs. To kill just one or two stray wasps or hornets indoors, spray them directly.