I purchased a sorressto collar for my dog for thee seasons, and never had any issues until this season I found an ebedded tick, and the collar is not cheap. If it is not going to take care of the ticks it should not be advertised that it does because that is false advertisement. No one should have to check there pet for ticks when the collar is suppose to be effective for both. If it is just going to take care of the fleas, you may as well purchase a flea collar and it will be a whole lot cheaper and just as effective being that is all your getting with the pricey sorresto. Not so happy Diane Givens