I have a question. Can anyone get to them in your yard? Do you have a neighbor that does not like ferrets? Just curious! Do you use a mulch in your yard? I know some mulches can cause problems especially with the cocoa product mulch! Just a thought. My heart aches for you, I am so sorry about your losses and what is happening and I hope the cause is found quickly to spare who you have left. Eleanor [Posted in FML 7799]