Overall it works and quite well but it's frustrating to deal with. If you don't hold your nose up right or your head in the right position, the liquid just runs out which is nasty. Sometimes it's hard to hold your nose when you are not feeling well which makes it even more difficult. I tried to hold my nose and use it like you are supposed to, but it's still difficult. Effectiveness It's pretty effective at making you feel better and not so stopped up during a sinus infection or runny nose, or stopped up nose. It works best with nose symptoms rather than anything else. Honestly I don't know that I would use it for any other types of symptoms. Ease of Use It's not that easy to use, trying to squirt this liquid in your nose is difficult. Then it starts to run out of your nose if you aren't careful. Immediacy It takes a few minutes but then you can tell a difference. It really starts to work and it is quite strong also. I highly recommend for symptoms to deal with your nost.