To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
If yuu are someone suffering from chronic sinusitis like me, this prodect it great. Easy to use, cheaper than other rinse bottels, and you aren't forced to buy the salt packets, which give you an oppertunity to use up the salt packets laying around.
I was skeptical of nasal rinse. But my doctor recommended. This works great. Relieves congestion, and has largely eliminated my sinus and allergy complications. I find best to use slight but maintained squeezing pressure, and as recommended,sterile (or boiled) water with salt.