The product didn't make any difference in my sinuses. It came with no instructions. I emailed owner(email on the receipt) to get information on how to use them. I got no reply, still weeks later, no reply and I waited a week. I googled it, and done what I found that way, however I didn't buy these from google and if you want people to buy from you then customer service, good customer service, is necessary and part of the experience.
