My pup has had at LEAST 10-12 ticks found on her in the last couple of days (after we took her for a walk on some trails on our street)... I treated her with Advantix over a week or 2 ago....... Soo..... WHY is she still getting ticks?? I thought the stuff killed ticks?? Nope..there they are.... butts in the air... sucking blood... GAH! What else can i do to help protect her and my other dog?? Any other med work better??