Hatchlings
A. Hatchling enclosures
Very few hatchlings will die, and once they have eaten they will pretty much make it. I keep hatchlings in a shoebox rack on paper towels. Drill holes in the sides to facilitate air flow. If you notice condensation on the sides of the box, they are getting too much humidity. I put a hidebox in the warm side. I leave the newly hatched gecko in the cup, take the cup from the incubator, and put the cup in the shoebox with the lid off. The hatchling will come out when it’s ready. This way I don’t have to handle tender geckos with my hands. Keep the enclosure moist and warm. Within the first several days you should notice feces.
B. Feeding hatchlings
After the first shed, feed a small cricket with the back legs broken. Dust with supplements just as you would a juvenile (I just throw them into the dusting jug with the prey for the juveniles). Remove the cricket the next morning if it hasn’t been eaten (though keep a piece of food in the enclosure for prey). They will probably not get the cricket the first time, but after a couple of times offering crickets they will start to understand the angle of pursuit and be able to get the prey. Feed 3-4 times a week, giving a light spray each time (heavier if you notice pre-shed opaque skin), taking care to remove any crickets that are not eaten.
I alternate prey. I primarily feed crickets, but a couple times a month will feed with dubia roaches instead. If possible, I gut-load the prey with supplements 24 hours before the feeding. The roach chow I’ve had the most success with is no longer available (a friend of mine created it, but no longer makes it) so I’ve been using Repashy. I offer the prey 30-60 minutes after sundown, and clear the uneaten prey from the enclosure about 60 minutes after sunrise.
If you notice a gecko hasn’t eaten a couple times, keep a log of it.
I’ve also kept them in the incubator until the first shed, but didn’t notice any advantage to this.
I’ve had hatchlings escape their enclosures and live in my basement for several weeks. I hold those back, and one of them is now my best breeder.