I cannot praise this device enough. I was constantly waking up to find my wife had again moved to the spare room to get away from my snoring. Not a nice feeling. I use a program called snorelab because I thought she was being dramatic. She wasn't with scores of 30-50 most nights and over 70 after drinking. I have been using this device for three weeks and scored a 10 on the first day whilst I got used to it and every day since my scores have been 2 or lower, with several zeros. Beyond all expectation. I never realised how badly I was sleeping either. Huge recommend to anyone. It really does work