My problem is that I'm used to the Vick's inhalers. Which are pretty weak, so I tend to snort at them pretty hard. DO NOT DO THAT with this product. Seriously, I've done it a couple times out of habit, and spent the next five minutes crying and whimpering. The stuff works /really really well/. It's unbelievably effective. "Inhale gently", as they say.
They've been quite useful, since we've both had something cold-like since late last week.