No affect on snoring!
I molded the CustMbitr to my teeth following the instructions.
First night I tried with just the lower one, but still had same amount of snoring.
Then I tried the upper by itself, again no effect on the snoring. And finally, I tried both at the same time and still no effect on the snoring. I snored as bad as I ever have.
I had no problem keeping it in my mouth the entire night and tape-recorded the entire sleeping session. Very disappointed in this product.