Are the wattles hot? We had a wattle problem here for a bit. The roosters that are penned separate, I put Lincomycin Spectinomycin in their water and they were fine after 3 days. Then my daughter's rooster developed the same thing and he was in with a bunch of hens. I didn't want to medicate everybody so I made a pill for him. I had a little bit of hard boiled egg yolk, some yogurt, 1/32 tsp of the medicine, and some cornmeal. I have a 1/8 tsp measurer and I used about 1/4 of this spoonful of medicine. I mixed the medicine into the yogurt and egg yolk then put that into some cornmeal (to make a pill that I could give to him). Just keep coating the yogurt mix with cornmeal til you can handle it and then stick it in the back of his mouth so that he will swallow it. Her rooster was fine the very next day. Next time this comes up, I won't administer it for 3 days, I'll just make a pill.
LS-50 is one mix that is commonly found, a water soluble powder.