I'd soak both feet in warm water with epsom salt added for at least 15-20 min per day and put something like triple antibiotic on them, or if you can get it there is a product called Nu stock which is a cream that has pine tar and sulphur in it it is amazing for healing. I usually treat at bedtime so I know they aren't going to be out walking in dirt and water. Doesn't really look like bumble, the one on the right[looking at the pic] looks the worse . I'd just treat until healed.