I've used this one before during a recent hunger strike.
G3 Slurry: Slurry to help stimulating the feeding response of Non-eating Geckos
By: Marcia McGuiness www.goldengategeckos.com
In a blender, combine:
1 small can Hill's A/D pet food (available at most vets)
1/4-1/3 cup Ensure (not chocolate)
1 jar baby food squash
1/4-1/3 cup Pedialite
2 crushed tablets or contents of 2 capsules Milk Thistle (herbal supplement, liver purifier, found at most drug stores.)
1/2 tsp. each calcium powder and herp vitamin powder
1 large handful of mealworms, added slowly while mixture is blending
Puree all ingredients until completely smooth, and pour into ice cube tray(s) and freeze. Store cubes in zip-lock bag in the freezer until ready to use, then thaw out 1 cube at a time and store in fridge for 2-3 days. I use the empty baby food jar for this purpose, washing it thoroughly after each batch.
Using this mixture, draw a full dropper (1 ml. eye dropper type) and place a drop on the gecko's nose. It will start to lick it off, and as it does, slowly squeeze out a little at a time. Most geckos love this food, and will lap it up. Patience is the key here.
**NOTE: Do NOT tell anyone in your household you put mealworms in the blender!