The SnoreRx device does stop me from snoring. However, I have an overbite, and the device is fairly uncomfortable to wear, as it forces my lower jaw forward in an unnatural alignment (for me). I usually wake up after a couple of hours of sleep and end up removing the device due to the discomfort. I tried putting it in the boiling water again to re-fit it, per the instructions. I wouldn't do that again, I ended up with an even less comfortable fit, as the material wouldn't form to my teeth as well the second time around. In the past I had TMJ which has been gone now for over 10-years. When I use the SnoreRx regularly the TMJ starts to resurface. It does work however, and if I can wear it for the first few hours at least my wife can get to sleep!