Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to use coconut oil for flea and skin treatment on dogs [title] Buy extra-virgin coconut oil. [step] Since your dog will be ingesting the oil, choose the highest quality coconut oil you can find. If possible, purchase organic oil.

Ending1: Check the ingredient label on your coconut oil to see if it contains any toxic chemicals. [substeps] Coconut oil is light, odorless, and has a high content of minerals, such as selenium, magnesium, and sodium. Ending2: This will help prevent any lice or ticks from getting into your dogs. This quality oil also helps kill any flea eggs used to feed your dog. Ending3: [title] Purchase a 10 ml product for daily treatment. [step] Coconut oil, other natural oils, and glycerin are all good options for treating flea and skin infestations. Ending4: Avoid buying refined, bleached, and deodorized (rbd) coconut oil because the processing destroys nutrients. [substeps] You can find high-quality coconut oil at grocery stores, pharmacies, and natural food stores.

Answer format: ending1/ending2/ending3/ending4