Possibly if they drink it.
YES!
Ask the vet.
yes there is......
The relationship between a dog and a flea is called parasitism. Parasitism is a relationship between an organism and a parasite in which the parasite needs the organism to live. Without host, adult fleas can only live about two weeks. An example of a close living relationship, like fleas on dogs, is the Oculotrema Hippopotami, which is a parasite that lives in most Hippopotamus' eyes and gets rid of the algae in them. Also, many birds live near Hippos and stand on their backs for a great deal of the day to rest there while catching birds, but they also eat the bugs off of the Hippo's skin.
Possibly if they drink it.
the flea sucks the dogs blood, therefore the flea benefits, while the dog detriments...
YES!
Fleas suck the dogs blood, and causes itch. The flea is a parasite to the dog.
Advantage once a month topical flea treament for dogs and puppies is one of the highest rated in flea control for dogs. For cats, Revoltion is the best bet.
Bug jug, flea tea
No.
Catching from other dogs/ cats and not being treated
If you have bathed the dog with a flea treating shampoo and then applied frontline flea protecting to the dogs once dried and they are still comming in covered with fleas i would say that there is a serious flea problem/infestation in the area that you are allowing the dogs to be in.
Dogs with scratch, and lick themselves
Because her children had gone to the dogs!
Some effective methods of flea control for dogs are: Cutting and grooming the dog's fur regularly, washing the dog regularly, using anti-flea medication obtained from a veterinarian, quarantining the dog for a period of time.