Last summer I noticed that one of my girls had a huge swollen lump on the top of her foot. After looking closer, I realized it was an advanced case of bumblefoot.
Anyway, I panicked and knew she was going to die. I also decided that I didn't want to treat using oral or injected antibiotics - I know what they do for my digestive system and we avoided them while raising our children.
I soaked her feet using Grapefruit Seed Extract oil diluted with water (this is a wonderful thing to have in your medicine cabinet - it kicks infections!), removed the plug and lanced the huge abscess. I removed as much of the 'cheese' as I could and then repacked the area with plain antibiotic ointment. I wrapped it with cling bandage and then did the other foot. At first I kept her inside for a couple of days but she looked so lonely I put her back outside.
At first 2-3 times a week, then every Sunday night, we would repeat the procedure, unwrap the wound, soak in GSE water, remove 'cheese', repack with ointment and bandage. At one point, her leg swelled up a bit and I knew I was going to loose her to a worse infection but I didn't change treatment and the swelling was gone by the next time I changed bandages.
She never acted like it bothered her. She would quietly cluck at us as we cleaned her up. For a while I could tell which hen it was because I would recognize the cluck. Now, she just blends in with the others. It took a couple of months but the wounds all healed nicely.