Please know that these products don't prevent snoring. This is not medical advice, but I believe it is important for people who want to do something about snoring to have some idea as to what works best. I have been a snorer all my life. This is the first time that I have heard of a nasal device that can help with snoring. If you don't think it is a real solution to snoring, I am not sure what else to tell you! But it does work, and I do use it.
Snoring is not just about the breath. It can come from the muscles in your face, neck and chest. It's a very common problem, and it can make you feel very unwell. Snoring can be treated by a good amount of exercise, sleep and nutrition, as well as a few simple treatments. If you know about snoring, you can stop snoring, but if you haven't yet, you can at least know that snoring is not normal, and can have a very real and noticeable impact on your sleep. This is why you need to do your research before starting any treatments against snoring. When in doubt, ask someone with expertise, or a doctor.