I used Advantage on my Yorkie Poo, 4 days ago and she is still scratching?

Jukebox

New member
like crazy and we are finding fleas where she is lying, but the fleas are not biting us or the cat, that was also treated. Should I use a flea shampoo and would it be too toxic after the Advantage. She is only 2 1/2 years old and 7 pounds.
 
Top