I was initially unsure but a liked the idea of a spray that went direct to the problem. I have found that it gives a approximate effect for 4 hours from time of spraying. Effect, stopping snoring at beginning of sleep. If a snore does pop out then having it by the bedside for an additional spray keeps the night quiet. Bonus is that it does have a pleasant taste and does somewhat clear the nose, but better if you have a nasal decongestant for this.