My dog Zyrah has been infested with mange for about 2 months na. I have consulted her to a Vet and given her with an advocate application as well as revolution with 2 weeks interval for about 2 months now; moreover, I bathe her twice a week with Meconazole shampoo + Lori soap while observing the correct method of application. However, I still can not see any improvement despite of all the intensive therapy. Istoryans please help...