Diffuser vessels for insect repellents; Electric devices for attracting and killing insects; Electric diffusers for insect repellents; Insect collecting cages; Insect collectors' boxes; Insect habitats; Insect traps; Insect vivaria; Plug-in diffusers for insect repellents; Plug-in diffusers for mosquito repellents; Ultrasonic animal repellers; Ultrasonic mosquito repellers