what is better out of these 2? Idk why my vet always tells me to use nizoral 2% I have been researching everyone uses chlor! And other shampoos with other chemicals. Niz always gets slow slow results in a healthy dog with high immune system. Anyone here know much about these 2? Removing yeast and bacteria? I went online and bought every shampoo pretty much and then bought all of vibrac supply from allergy just to have on hand. I only have the cortivance spray, did not know they had so many products, Canada is VERY limited when it comes to products for animal and people. Feels like I am living in a third world country sometimes.