I like it. After having issues with TMJ from trying ...
I like it.  After having issues with TMJ from trying other mouth or chin strap devices for snoring, this is a simple way to reduce snoring.  Don't know if it's eliminated it or not (my wife said I still snore but not nearly as loud), but I know it's helped.  If you snore heavy, you wake up with a sore throat.  If I put this in at night, I don't.  They do fall out on occasion, that's the only reason for the four stars.  You sometimes have to wake up and find them in your covers or next to your pillow.
Rating: 4 stars