Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to handle mothball poisoning in cats [title] Watch for vomiting. [step] One of the most common reactions to mothball poisoning is vomiting. All cats vomit from time to time, and you'll know your cat's behavior best.

Ending1: But if you notice your cat vomiting more than usual, take it to the vet immediately. [title] Smell for mothball-scented breath. Ending2: Cats getting mothball poisoning often vomit into their mouths; warning signs should immediately be looked out for. [substeps] If your cat vomits regularly, or spits out the contents, this is a bad sign and should be checked out. Ending3: However, many cats begin vomiting once their stomachs start boiling over. In a cat, the bile in the stomach comes up as a thick, mucus filled, dry squeeze. Ending4: As soon as you sense that your cat has vomited, move away from it until it stops vomiting. With the repellent on hand, it's imperative that you move away from the cat quickly.

Answer format: ending1/ending2/ending3/ending4