Most of the time I let the wounds just heal by on their own course. Only time I apply a band aid is when deep cut on my fingers to prevent water going in. Animals in nature don't apply band aids. Body has its own healing mechanism, provided it has not many toxins running in the blood, otherwise the body finds this as an opportunity to ooze out those toxins through the wounds as puss. I never get puss on my open wounds, since I detox through regular channels well.