Kristy and Don are both right and I am sorry to say that I don't believe you can treat this infection due to its location. Being directly infront of the nasal passages makes it extremely difficult to apply any antibacterial ointment without getting any in the frogs nostrels. I would get the little guy to a vet ASAP before it spreads to the repitory system and becomes more complicated. Antibiotics are necissary at this point and probably oral ones at that. Good luck and I hope he recovers soon.