I have a hen I believe has favus (white on comb, "honeycomb" skin on top of being quarantined for vent gleet that even after a week of treatment hasnt seem to be getting any better.. the today while washing her dirty butt I discovered a large squishy abscess on her neck so she will be culled as soon as my boyfriend gets home, now my concern is for the rest of the flock.. my rooster and a couple others look as though they may have it. Has anyone used Vet Rx Poultry for this? Are there any other treatments I can use for the whole flock?? Heres A pic of the rooster: