Mouthwash II

Question

You replied to my previous question about mouthwash that we don't have to worry about the alcohol being derived from grain. Is this because they just don't use grain alcohols for mouthwash? Or is it because mouthwash is not raui lekelev? So what about Arak, or Vodka? A dog would never drink vodka. I'm just trying to understand. After all, when you use mouthwash, you end up tasting it, and even swallowing a bit of it.