Get Your Cat Care Questions Answered By Cat Vets ASAP
These are either mites or fleas. Go to the pet supply store and get some Revolution. This will kill both types of parasites. Frontline and Advantage will only kill fleas - not mites, so use the Revolution. You only have to treat your cat once a month and it will also take care of ear mites and intestinal worms also.
Please let me know if I can help further.