Care home for my father

Hi all,

I’m thinking of contacting the Alzheimer's patient care home in Oregon (Prestige care) for my grandfather. But I don’t have any experience in this field. Do they provide full-time nursing care for patients? Is it the right choice to get service from an adult care home? or do I need to seek the help of any caregiver for him?  How do I manage the pay for a nanny agency? Are they really expensive? Please share your experience. Thank you in advance.