Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to treat edema in horses [title] Wash your hands before and after touching the edema. [step] Scrub your hands with soap and hot water for at least 20 seconds. Wash up again after examining or caring for the edema.

Ending1: [substeps] Hand hygiene will help keep germs from spreading to and from the problem area. [title] Clean and bandage any wounds if your horse sustained an injury. Ending2: [substeps] Similarly, if you are treating edema from other animals, clean the surrounding area with hot water and soap. [title] Clean areas where edema has infected the horse's skin. Ending3: Wash your horse's bridle prior to and after handling it. Clean your hands with soap and water again while you're on the horse. Ending4: [substeps] If you have to touch or touch the edema, wash your hands after you handle it, even if it is not necessary. Dry your hands with a towel and do not touch the edema.

Answer format: ending1/ending2/ending3/ending4