So I have tried a little magnet thing on my husband. It works like magic, until he rolles over dragging his face across the pillow and it falls out. I was so thrilled I started gifting them to my female friends who have snoring husbands. They worked for three out of four people. Or four out of five if I count my husband in the statistic. They are pretty comfortable, and they help my husband feel like he can breathe better too.
Edit: Oh, I remembered that when he first got them he said he felt like he slept better and needed less sleep.