My OSCAR data wasn’t great. Mouth leak ruining my sleep gains. I also have daily baseline congestion but don’t treat it because I have scent triggered migraines. Thus, enter mouth leak with a nasal pillow mask. Medical tape hasn’t been helping me as I tear thru it. Chin strap was a no go. These somnifix for mouth leak (and that only)-really did help. As always YMMV, but just wanted to share these results here for those that might want an alternative.