Frontline works on our dog, too.  Our vet recommended we place the tube along his back to his tail rahter than on one spot.  The ticks don't even attach, knock on wood, they were crawling off him the other night.  This si our 2nd year using Frontline with good results.  One crawled on my 3 year old daughter who screamed bloody murder.  Her dad was trying to get her to calm down to tell him what was wrong while holding her.  I guess I could tell it was "GET THIS CREEPY THING OFF OF ME!" scream because I walked up to her pulled her arm straight and picked the tick and then screamed (silently in my head)all the way to the toilet where I flushed it down.  Had the creepy crawlies for awhile.  Man, I hate those things.