I use this shampoo:
http://www.highcascadeemus.com/xcart...3&cat=5&page=1
I swear the smell lasts for 7 days. It also is a flea repellant. I have not had to use Frontline since I started using this shampoo. And it has Emu Oil in it, which is EXCELLENT for sensitive or dry skin. I love this stuff!