For that I would use the first link I gave you, the non-surgical treatment. Soak it to soften the scab and remove it. You can also use decolorized iodine (not the same as betadine-most 1st aid sections will have it) apply that to the lesion and then wrap it over night, that will also soften it up. Sometimes there is a 'core' sometimes there is not. Remove any pus and clean it out really well. Sometimes you have to manipulate and squeeze pretty firmly to get stuff out. Fill the hole with your ointment of choice, plain neosporin, plain triple antibiotic ointment, etc and cover with a piece of gauze or telfa pad and wrap with co wrap to keep it clean and dry. Change the bandage daily and reapply the ointment until you know it's healing well, then you can go longer between changes. I usually keep them bandaged until it's fully healed. You may have to clean it out more than once, just depends on what all is in there, sometimes once is enough. If it just keeps recurring and you can't get it to heal (this does take time, not an overnight thing) then I switch to the sugardine and do that every day until it starts to heal. I've had very good results with the sugardine on resistant bumblefoot.
