I noticed bumblefoot on one of my girls a few weeks ago and was able to remove the scab a few times and dress it with various poultices and salves. It never appeared to bother her (no limp, etc.) so I wonder if it is healing up and I should just leave it alone or if I should continue treating it. The scab would not come off tonight. The white is not pus, just flaky skin.
I would soak this foot a little and get the scab off first.
The two times I have treated bumble foot the pus was squeezed out and it was hard to get out. I didn't cut into the foot. I do think the pus needs to come out for it to heal. It does look quite swollen.