I don't use one, but back in August I got my DH one. He is 55, no health insurance, was running out of options. All that was left was a neti pot. He had tried everything else. And could no longer just rely on his health insurance for a Z-pack.
Ok, so 5 months later...he is much improved.
You must use distilled water with it though. And I bought the whole thing, the little packs of medicinal salts and the distilled water. And, he heats the mixture in the pot, in the Microwave, for 10 sec.
He started out with 2x a day. It took him some acclimating, even though he uses the saline nasal sprays. Now, he is down to PRN...."as needed" His sinusitis has healed and improved considerably.
I am glad it has helped him...he was doing very poorly over the summer, health wise. Now, he can breathe better, and feels better.
He is not a member on these forums though...or I am sure he would chime in.