Dogs are like children in so many ways (let’s hope fleas isn’t one example of their similarities). They can’t be left alone for too long. They’re far more pleasant to be around with when they’re utterly exhausted, and they both hate to swallow pills.
Dog owners routinely give their pets medications that are sold both over-the-counter and through veterinary offices in order to avoid infestations of fleas, ticks, heartworm, and other parasites.