What diseases were there in the trench in World War 1? Trenche foot was very common in the trench warfare. caused from wet feet and not being able to change their socks and boots. Edit
Repels Sharks No.........human urine actually repells sharks and other fish.
Studies show varying degrees of efficacy, although cranberries don't increase the acidity of urine, at least in humans, as was once thought. Cranberries' effects are usually studied in humans, not animals. Even if they prove helpful for people, that's no guarantee they'll have the same effects for dogs and cats. Still, they appear relatively harmless and may be a safe supplement.