I remember somewhere that Humble said to put a litte in a nasal spray bottle and use it that way. Obviously, it would not last, if it is activated; so it would have to be used immediately. I don't remember if it was supposed to be activated or how many drops. It must have been in one of his interviews; because I don't find it in his books.
Anyway, once upon a time I tried to put H2O2 (Hydrogen-Peroxid) drops in my nose. Very bad mistake for me. I heard of others doing this with no problem and great results. Not for me. both sides of my sinuses swelled to completely shut off any breathing through my nose for more than 24 hours. It is not easy to drink or sleep like that. I do not have a problem with http://www.sinusbuster.com/
(capsaicin pepper). That is the only problem I have left. Sinus. Wish I could grow new sinuses.