Natural Treatments for Childhood Impetigo

I had Impetigo on my right knee in 1950 when I was in primary school. My parents tried many natural therapies, I was having home schooling to prevent the spread, but the sores persisted for a long time and were red and itchy. One day when I was crouching down wearing shorts, our cocker spaniel came right up to the sore on my knee and licked it for a long time. That stopped the itch, the Impetigo healed up right away and didn't return.