Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to protect an injured eye on a horse [title] Put a fly mask on the horse. [step] You can protect the injured eye by putting a fly mask on the horse so dust and debris cannot get into the eye. A fly mask is a mask made for horses with two round protective patches, one for each eye.

Ending1: When you do need to put fly mask on, simply fit the fly mask over the eye and it will hold in place. [substeps] You'll want to pull the fly mask right onto the injured eye using a pair of pliers. Ending2: The most common ones are made of metal and can be purchased at horse tack shops. [substeps] If you try to put a fly mask on the horse yourself, you may hurt them. Ending3: Even though you will be using goggles to protect your horse, you should choose a fly mask made from something durable. [substeps] You should also wear gloves when putting the fly mask on because you do not want the fly mask getting between your eyes. Ending4: You can find fly masks at horse supply stores or online. [substeps] To put the fly mask on the horse, have your horse to lower their head a few feet from the ground.

Answer format: ending1/ending2/ending3/ending4