This disclosure describes a fusion polypeptide that includes an anchor domain and a binding domain that specifically binds to a target biofilm. The anchor domain generally includes at least a portion of a cell membrane polypeptide. The binding domain includes a sufficient portion of a polypeptide that specifically binds to a component of a target biofilm to specifically bind to the target biofilm. This disclosure also describes cells that include the fusion polypeptide and methods involving the use of such cells.