I use Tropiclean, they have a line with all different scents, I personally love and use the Papaya Plus 2 in 1 Shampoo. I also just found their SPA line at Petco, I E-mailed the company to make sure it was actually Tropicleans SPA line and not a knock off, they replied that it is their line. I purchased and use the SPA Colors White for our white boxer girl Gracie and I LOVE it!! Smells kinda coconuty with a hint of sunbathing lotion I've smelled before but can't put my finger on. Anyhow, both of the ones I have bought and used, I love!! They carry them at Pet Supplies Plus and Petco. Here's the link to their site:
Natural Pet Grooming Products - Pet Shampoos, Conditioners, Colognes, Oral Care and More! Their products are also natural, which is very important to me.