Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to break up a cat fight [title] Fill up a plastic spray bottle with water. [step] A standard sized spray bottle (16 fluid ounces) works fine. Ensure the water and the bottle are clean.

Ending1: Spray the cats and place one large squirt bottle inside each cage. Pour in a pinch of powdered camphor spray. Ending2: You'll need a new (but empty) bottle and some filters so the water can circulate freely. [substeps] The hand pump and manual spray won't work in your pet's home. Ending3: Distilled water is easier to break up and non-stick water is easier to clean. [substeps] Since cats like water, it is vital to have a special spray bottle. Ending4: Do not use bottles that had bleach or other chemicals in them. [title] Aim the plastic nozzle at the cats.

Answer format: ending1/ending2/ending3/ending4