Nasal Dilator Which nasal dilator do you recommend? What is the difference between nasal dilators and nasal strips? How to check if a nasal dilator fits properly (i.e., isn’t too small or large)? Don’t nasal dilators fall out of the nose at night? Are nasal dilators well tolerated? Are nasal dilators with filters also available? What are their advantages? How long does a nasal dilator usually last? Are nasal dilator refill packs also available?