Indoor cats can indeed get fleas despite never going outside. Fleas can hitch a ride indoors on other pets such as dogs, on your clothes, shoes, or bags, and even on people themselves. Once inside, fleas seek hosts like your cat to feed on and reproduce, quickly leading to infestations. Fleas can live in carpets and furnishings, making your home a breeding ground for them even when the cat doesn't go outdoors. Because cats groom themselves well, fleas might be hard to spot, yet the itching and scratching they cause can be significant. Preventive flea treatments are important to protect indoor cats, as flea infestations can transmit other parasites and diseases. Regular flea prevention is advised for all pets in the household to avoid this issue. Flea eggs can hatch inside the home, meaning fleas are not just an outdoor problem but an indoor one too. Therefore, keeping indoor cats on regular flea prevention medicines is essential for their health and comfort. In summary, indoor cats can get fleas through indirect contact with fleas brought inside, and preventive flea treatments and home cleaning are key defenses against flea infestations.