A mosquito repellant system that really works effectively. It’s very powerful and repels mosquitoes very quickly. It’s true that these repellants made of chemicals and they might be harmful to health but there are more harmful and life threatening diseases that mosquitoes spread. So these repellants have to be used wisely. Best way to use this is to turn on the Good Knight Xpress system in the evening around 5’O clock or whenever there are more mosquitoes and keep the doors and windows open for some time and when you shut the doors and windows, turn it off after an hour or so. Using it this way will drive away the mosquitoes that are in the house and when you shut the doors, the mosquitoes are much less. Make sure you keep these away from kids. Its best to repel the mosquitoes rather than suffering with diseases they spread.