I was somewhat sceptical about the effectiveness of this product, but decided to give it a go, particularly as there is a money back guarantee. Having tried it now for two weeks, I have to say it works exactly as stated. It was very straightforward to mould it to my teeth, following the simple instructions, and having used it every night I have had no problems at all. The snoring has been completely eliminated and I no longer suffer from a dry throat as a result of breathing through my mouth. Highly recommended.