I have had probably 6 or 7 bumblefoot cases that were small and resolved easily with the soaking, scab removal, ointment and bandaging. Some took longer than others. I have had one bird in particular that had a horrible case. It's a roo, no idea if that has any bearing on it, all the others have been hens. His lesion originally was smaller than a pencil eraser, but upon removal it was not a solid core, but the stringy, ribbony stuff that goes through the foot. It was a very long time, multiple procedures and multiple antibiotics before it cleared up. Took about 12 months. The only antibiotic that worked in his case was cephalexin. Penicillin, enrofloxacin, clindamycin, tricide neo, none helped his clear up. He has been bumble free for 2 years, and last week found him once again with a bumble. Again small lesion with nasty ribbony stuff. Arghh. So this time after cleaning it out, I started cephalexin right off. It's looking better, so time will tell. I'm not expecting it to be quick based on last time. So genetically speaking, that certainly could be a factor since none of my others has been like his.