Typically , The certification process varies from state-to-state - Check with local governing authorities/regulatory associations/schools etcetera . Once applicants meet eligibility criteria – This includes completion of training/experience/hospitality/cleanliness/water safety certificates etc -, Passing exams oftentimes written/verbal/practical tests pertaining specifically established benchmarks for cleaning/disinfecting/grooming /dealing with animals in distress/safety measures/ customer engagement protocols/knowledge of skin treatments/parasite control etc .