@jal333 What an interesting idea. I use a CPAP mask, sometimes my mouth opens which causes me dry mouth and may disrupt my sleep. I was thinking about getting a chin strap, maybe I'll try the tape first (though my wife will probably be scared I might somehow manage to swallow it). What type of tape are you using? The thick brown tape or something thin like Micropore (https://www.amazon.com/Micropore-Surgical-Tape-Yards-Dispenser/dp/B00ICF3TG2 )?