Yep, and F10 should not be used for Fogging for Ris at all. Wont help clear anything but subside the RI enough to get proper treatment.
All F10 is doing is killing the bacteria and allowing the snake to breath better similar to that of Vicks vapor rub on your chest.
Just use it as a cleaner but not a medical treatment..
And I not going to make a post about dosages as too much can fall back on me for giving out information that someone could mis read and kill their snake. I wont be held liable for any of that so what i posted above is simple and not detailed..