Hello! I am new to owning ducks, I have 5 ducklings who live in our backyard. They have a secure cage but we let them out most of the day with us. Which leads to me my question... I have 3 kids, who play in the same area the ducks walk area (and poop) in. One of my children is a toddler who doesnt think twice before putting her hands on the ground and rubbing her eyes. How concerned should I be with Salmonella? Is it common? Thanks!