Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to make a cat or dog bed using a pillowcase [title] Stuff an old pillowcase with a soft, warm material. [step] The most ideal options are blankets or feathers. Make sure they are not dirty or touched by another animal.

Ending1: [substeps] The time it takes for the pillowcase to disintegrate into vapor may be closer to the toilet seat than two days past when you're not washing the pillowcase every day. [title] Make a paste of baking soda and water. Ending2: If they are, go ahead and use fabric lining instead. [title] Turn on some kind of air conditioner. Ending3: [substeps] If your pillow does not belong to your pet or any other traveling companions, fluff it out with your finger for texture. [title] Place your pillowcase on a hard surface such as a bed. Ending4: [title] Make the pillowcase plump by spreading the stuffing around, so no areas are filled with a huge amount. [step] This is important so that your pet is happy with the bed.

Answer format: ending1/ending2/ending3/ending4