no ointments as anything oil based can actually do more damage than good.
I would put him on paper towel substrate and keep his tub hospital clean (chlorhixidine or F10 work great for this and are safer than diluted bleach)
Soak him daily (or twice daily) in a betadine bath (water temperature in the mid 80's)
as long as you keep the wounds clean and infection away they should heal on their own