If the problem persists or the recomendations do not work. Vets sell kennel spray.Not to be used on the animal. Seemed to work for us one time that we had an extreme infestation of fleas. I preffer the less toxic methods myself if they work.

Remember to read up on the fleas life cycle and how to defeat them. The new eggs hatch quite some time after they are present. So the treatment has to have some length.