After reading so many positive reviews, I was convinced that Olaf the nasal aspirator is exactly I was looking for. Unfortunately, my expectations were not met. My daughter (5 months) is absolutely not thrilled when I turn on the vacuum cleaner and is fighting tooth and nail. As you hold the second nostril must, it is only really possible Olaf apply. If you can not keep the nostril brings the application nothing and even if you manage it, you do not get out the majority. The two essays (blue and white) are much too thick for babies from 5 months and Rosane is too thin, an intermediate size would be good.