Daphne,
 
4 years ago when we lived in Bethesda, MD we used a company called Tender
Loving Cat Care to come in and care for our ferrets when we were away.  We
were quite happy with them.  The number I have for them is 301-258-7745.
Our regular sitter at the time was Kathy.  But I have no idea if she is
still pet sitting or not.
 
Good luck,
 
Norris (Mom to Ozzie, missing my beloved Gunther and Nico terribly)
[Posted in FML issue 2757]