First of all thank you Rachel for your reply.
The ACFs condition has worsened. The male has now developed noticable red lines around his eyes and is listless. None of the symptoms have improved or diminished.
Can you please tell me the best way to euthenize them without decapitation or any other bodily mutilation. I am having trouble decifering the chemical lexicon (MS-222???) provided by some web sites. Also what is the best ecologically sound method for post-mortem disposal.

Thanks again.
JO