I haven't had to use this yet, however I used to have one just like it that I got at a store. It's exactly the same so I'm assuming it will work just as well. It works far better than the electronic ones or the bulb ones. At first I thought it was gross to be sucking snot out with your mouth but it works so well. The long tubing and filter make it so nothing is going to get in your mouth and it gives you the power to choose how hard you suction. Whoever thought of this idea is a genius. I felt like I could never clear my babies noses with the other types, but this one gets it all out. It's made so it's comfortable enough to not bother infants much and once they get older it's a bit more difficult and easier with 2 people, one to hold your baby and/or the tube to their nose and one to do the suction part, but it can be done by yourself as well. Awesome product and so glad I have it as I'm due with mt 3rd baby Jan 2020.