I'm a proponent of the sinus-clearing neti pot, but I'm always shocked when I hear anecdotes of small children mastering the technique. As used to it as I am, pouring salt water in one nostril and out the other isn't an altogether pleasant sensation, and doing it right isn't exactly child's play.
As you can see, she has no trouble managing the spray bottle, which delivers an ultra-fine mist of preservative-free saline solution (3 vials are included). I can see how this product would be great for clearing tiny baby noses as well--and without the drippy mess and large dropper size of more typical saline nose sprays.
Disclosure: I received 2 samples of SinuCleanse Kids Mist for review. My 3 year old has yet to try hers.