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Have only been using the device for 4 days but already feel a difference. Have been looking for something like this for years. The flow of water is ideal and is not too powerful yet not too weak and it delivers a steady flow of saline solution into each nostril. In addition to the nasal wash I prepare a stream bath in a bowl with peppermint, eucalyptus, lavender and oregano oil to inhale and I must say I have found a difference in my breathing and getting a good night's sleep. Considering I've been hampered with sinus issues for years I find this a God send 🙏