Frontline had stopped working and my poor dog was really uncomfortable. My mum suggested Program as she had used it for years (Program doesn't kill the live fleas already on the animal). She also told me about Capstar to kill the adult fleas. when I first treated with Program and Capstar I also treated all the carpets. I now treat monthly with program to stop them breeding and use a Capstar if he picks anything up or when he comes back from his hair cut. Also so much easier than drops and no wet patch so must be safer for the kids too. Brilliant!!!!