I've NEVER had luck with tease feeding. I'm sure it does work great for some, but unfortuantly I think when I attempt it I just end up freaking the poor snake out more.
A few things that might be helpful..
1) Some snakes like washed pinks. It's pretty easy to do, just get a bar of dove soap and wash your pinks in it, rinse them off, then put them in the snake's feeding tub.
2) Make sure that the area in which you're feeding your snake is nice and dark. I usually cover a new snake's feeding bin so that they feel more comfortable. If their feeding area is somewhat high traffic, place them in a dark closet.
3) Try leaving them over night with the pink.
4) You can cut into the pinkie's head (make sure to break the skull) so that the pinkie smells more appetizing. This is called braining.
5) One common mistake may be that food is being offered too often. Snakes can actually start associating food offerings negatively and the snake's hunger strike will be prolonged. Wait a week and a half or so in between food offerings.. even though it seems hard.
6) Okay, this last one practice with caution. I'd like to state that I have NOT used this method in the past, and I'm not sure how successful it really is, but I have read about it, and it may work. It should be used as a last resort though I think. Okay, here it goes:
Deprive the snake of water in between feedings. When you do offer your snake food, make sure the f/t is wet. The dehydrated snake will go to drink, and then hopefully instinctively bite its prey and eat.
If a hatchling is really weak though it might be a death sentence to deprive them of water for a long period of time. I'm not sure how many days you're suppose to make them "fast" for. Hopefully someone who's tried this method will pipe up.
7) Do a snake eating dance?!
Can't hurt!! I hope you get your guy to eat. Good luck. :cheers: