I would say that the Neti pot helped, with the caveat that I believe my ETD was caused by a sinus infection. I was also taking nasal steroids at the time as well as astelin, and I didn't start the Neti pot until after a round of oral steroids that had gotten rid of 80% of the inflammation, so hard to say whether the meds, neti, or time helped the most. I will keep using it in the future - I get sick a lot and think it's a good tool to help fend off sinus issues.