Sorry to hear about your experience. I know a small handful of people for whom that product has worked great but overall it's not well known at all.
Medtronic is not particularly in my good graces either. I have tried several times over the years to get that products so I can carry them in the Shop since most people have never heard of them and you never know when it might be just the right match for a special need. They refuse to open a new distributor account, no matter what I say, and when I ask to talk to their boss, they never call back.
The Dry Eye Zone