Mine get the Brewers yeast mixed with a few other things that make up their vitamins. I also throw in 6 or 7 cloves of garlic when I cook up their rice mixture, but discard them when done. The oils are the only thing needed from the garlic anyway. My girls have never had a flea or tick and have never had any type of commercial flea & tick repellent applied onto them. Maybe I'm doing something right?
