Proper etiquette for thank-you/goodbye.?

Question

i've been the care-taker/gardner for a couple (second home),for about six years. they sold the home recently, and i wanted to thank them and say good-bye in a freindly but business like way. i'm having a hard time wording it. i also have one last bill to send them, do i send it separate from a thank you card?

Answer 1

I would send a letter, basically saying "Thank you for the opportunity to work with you and take care of your home. It has been a pleasure working with you." It can be very short and to the point

Send the letter separately.