Priced at $40 USD, the Fire TV Stick is a bit more expensive than Google's $35 Chromecast, but $10 cheaper than the already-affordable Roku Streaming Stick âlike other typical set-top boxes, the standard Fire TV is available for $100.
The precise question was: Is a dog's mouth cleaner than a human's? The answer to that is no, too, and basically for the reasons you've already cited. As we all know, dogs aren't particularly fussy about where they put their tongues or what goes into their mouths.
Because dogs do not spit, and human toothpaste is not edible. Your dog will most definitely swallow whatever you use to clean his teeth. You can purchase an edible toothpaste, just for dogs, at the pet store. There are many flavors available. Try to find one that your dog likes; your dog will be more likely to let you brush his teeth. A nice beefy brushing will be a tasty treat for your dog.