AMAZING EFFICIENCY. The high-quality professional pest repeller kit from 4TopTime is the most quick, effective and inexpensive way to repel of pests ( fights mouses, ants, cockroaches, bed bugs & more) at your home, kitchen, garage, warehouse, restaurant, hotel or shop. The pests just will leave the room - no killing, dangerous traps or use of poisons. EASY TO USE. Plug the indoor sonic pest controller into a socket and leave it to work. Try to keep windows and doors closed. We recommend using the 4 electronic pest repellers for a max 5,000 square feet area. WHEN WILL YOU SEE RESULTS? Users report increased pest activity in the first 2 weeks of ultrasound indoor pest repeller action - this is normal, because the device causes them to leave their nests. After 1-1.5 months, you will see that the indoor electronic pest repellent actually works - insects and rodents will removal and disappear. ABSOLUTE SAFETY for children, adults and pets 100% money back if unsatisfied !