No, never have. Word to the wise, next time you have a dog about to give birth, bathe her to rid the fleas before she gives birth. Perhaps the advantage seeped down from the back and onto the tummy. Sorry about you pups.
Whoever said you can't buy happiness, must have never owned a dog!!!!!!!!!!!
i see puppies in my shop all the time just had they 1st flea advantage or frontline and poor little things --loosing all their hair or sick![their little bodies can't handle all the toxic posion!!! I hate that stuff..use diatomaceous earth food grade and powder them dowm with it it kills the fleas and is natural safe for puppy and kittens