A few days ago I bought the nasal secretions suckers who just because our daughter (3 months) has its first real cold, is used. The operating principle is very simple simpel- a little breast milk or saline solution carefully instilled into the nose, leave for a moment and then apply suction. The advantage of this vacuum cleaner is that you can dose the force with which it sucks itself. Another advantage is that you can very easily make him clean after use. Conclusion: The purchase is really worth.