Cleaner, Custodian USPS(Passbooks) (Career Examination Series)

The Cleaner, Custodian USPS Passbook® prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: janitorial principles and practices; cleaning products and methods; general and mental abilities; and more.