Revolution has been working well for my cats for years. I prefer it over the over the counter stuff since it also protects against heartworm, ringworm and ear mites. Although my cat always runs and gives me the stink eye after treatment.
our cats always had a necklace during summertime, reduced tick bites to a minimum, made a huge difference. btw, anyone heard of the book called "Bitten: The Secret History of Lyme Disease" ?