Fleas can infest cats in the same way they do dogs, so it's important to use regular preventive flea treatments as well as flea treatment products whenever signs of fleas become apparent.
As with dogs, you should use a collar or topical spot-on cat flea treatment
like Advecta to prevent fleas in the first place. However, if your cat shows signs of fleas, you'll need to use similar flea treatment products to eliminate the existing population. Again, while collars and spot-on cat flea treatments will kill fleas, eggs, and larvae in the cat's coat, you'll still want to consider using other products like an indoor and outdoor flea spray to eliminate egg and larvae populations in carpets, furniture, bedding, and yards: