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What you are seeing on your cat are the contents of proglottid segments of tapeworms. Basically, these segments break off and look somewhat like grains of rice. Left alone, they dry up, take on a 'golden' hue and break open and spill out up to 30 sesame seed type eggs into the environment-in this case her coat. Tapeworms are transmitted to your pet through ingestion of fleas that are carrying eggs. You are probably being bitten by these critters. Even if you don't see fleas on your pet, it doesn't mean they aren't there. Cats that are allergic to flea bites are extremely adept at removing them from their bodies and fleas can come into the hme on clothing and shoes and they then transfer to your pet. I would treat your cat first with Frontline, Revolution or Advantage. You then need to get a tapeworm treatment from your vet and treat your girl. This will take care of the problem.
You can also bathe your kitty in a shampoo called Goodwinol Rotenone Shampoo. It can be purchased at many pet supply stores or online at www.revivalanimal.com. This shampoo will kill mites which are the other parasite that cats can get that sometimes affect humans. You need to either do the Goodwinol 3 days before the Fronline or a week after so as to not interfer with the efficiency of the shampoo.
Please let me know if I can help further.