I have sinusitis and due to ear problems, I couldn't do frequent washes, so this product saved me! It also helped my little one with her frequent colds, helping with congestion and secretions. I wouldn't say it has an annoying sound, I even tried it at maximum. The comment about the Otrisalin replacements is really helpful. As for durability, I can't say in depth because we've only had it for one day. I recommend it

I use it on my mother.
The only disadvantage of it is a bit noisy... otherwise, it does its job just fine.

It is quite good and effective. It was recommended to me by my friend who had the same one at home for his children. The only thing it needs is a replacement otrisalin, in which you remove the filter and attach it to the nozzle of the machine. And it is convenient because it can be washed. Something else I also know from my friend is that after each suction, it needs to be rinsed with water and a small amount of chlorine (a few drops) to clean the tube and disinfect it. Personally, I skip the chlorine and rinse it with plain water.