Here's why:
* The active ingredient needs time to work. Advantage works by killing fleas through contact with the dog's skin. Bathing too soon washes away the medication before it can be effective.
* The medication needs time to dry. Advantage is an oily solution and needs time to dry completely. Bathing before it dries could make it less effective and potentially irritate your dog's skin.
Important Note: Always follow the instructions on the Advantage product label carefully. The specific waiting time may vary slightly depending on the specific Advantage product you are using. If you have any concerns, consult your veterinarian.