I never had good results with K-9 Advantix. Brody was constantly picking up a flea or 2 when he was on it. Also, K-9 Advantix made him itchy when I used to apply it . . .we switched to Frontline Plus and we use half the application on Brody and half on Rhianna . . .we've never had an issue with it and it doesn't make them itchy at the application spot.
From thier own website:
Prevent ticks from attaching.
K9 Advantix offers proven protection against ticks. It repels and kills ticks before they can attach. With K9 Advantix, ticks are repelled and killed before they can bite, reducing the potential risk of a tick-transmitted disease.
K-9 Advantix says it repels fleas, ticks and mosquitos, but apparently since poor little Pixie had a tick, it doesn't . . .