A 12-week flea treatment refers to a type of flea prevention product that provides protection against fleas for a duration of 12 weeks or three months. These treatments are designed to offer extended efficacy, reducing the frequency of application compared to shorter-duration treatments. Some flea treatments, such as certain formulations of Bravecto, offer this extended protection period. These products typically contain active ingredients that remain active in the cat's system for an extended period, killing fleas and preventing re-infestation. Using a 12-week flea treatment can be convenient for pet owners, as it reduces the frequency of application and ensures continuous protection against fleas.