Re:
I think you're doing the best that you can do. You've tried everything in the "Trick Book" I've heard about and still no luck.
Some young were just not meant to continue on successfully. It's a hard situation us humans have a hard time comprehending sometimes. I guess thats why most animals subscribe to the theroy of "reproduce and have as many babies as possible at once", and maybe a few will survive to adulthood.
We humans are fortunate, in that we have one or two young at a time, and put all of our energy into them and most are successful.
I am in the same boat with you currently. 2 of my 13 refuse EVERYTHING I try. I've tried: f/t, live, de-headed, headed, brained, lizard scented, dwarf hamster scented, and mouse scented. Still no luck and it's been nearly a month for these two as well.
I must say the dryer trick sounds ingenious! I was getting resigned to the fact that I should take the two riding in the car with me on my trip to town the other day. But I guess the dryer with a good sized load would do the job just as well, considering my dryer likes to move all on it's own accord.
Best of luck though.
Just out of curiosity, at what interval do you try to feed them? And what kind of container do you have them in to feed?