[NEW 2018 UPGRADED] 4-Pack Ultrasonic Pest Repeller - Electronic & Ultrasound, Indoor Plug-In Repellent | Anti Mice, Insects, Bugs, Ants, Mosquitos, Rats, Spiders, Roaches, Rodents - Child & Pet Safe NEW ADVANCED DOG TRAINING COLLAR & REMOTE - advanced design that assures control on longer distances (30% more than the other electric shock dog collars). The ultra-durable, waterproof collar assures safe use for years to come.