UTI in men can be treated naturally and at home by following some preventive measures, eating right, and sticking to healthy habits. Cranberry juice, probiotics, and D-mannose supplements are some natural remedies that can help cure UTI, while baking soda, apple cider vinegar, drinking enough water and avoidance of irritants are some home remedies that help prevent and alleviate symptoms. Seek medical help if UTI symptoms persist after natural remedies and home treatments.