Control of fleas in the environment and on your pet is not easy. Many products are available on the market. Contact your veterinarian as some of these products may not be suitable for your pet, especially cats. Flea preventatives need to be used on all animals in the household. Flea preventatives need to be administered appropriately and on a regular schedule. Flea products can be given by mouth or applied directly to the pet’s skin. Some products contain IGR (insect growth regulator) and may be combined with a product that kills adult fleas. Most products do not completely repel or kill fleas instantly. It may take hours to kill the fleas. Consider your environment and rely on your veterinarian to provide advice concerning your specific situation. Fleas can be controlled.