The General Care and Maintenance of Leopard Geckos and African Fat-tailed Geckos by Philippe de Vosjoli - © 1990 said:DIET SELECTION
Currently the best procedure for leopard geckos consists of feeding a varied diet including of commercially raised crickets of appropriate sizes with mealworms and "pink" mice being added as part of the adult and subadult diet and occasional feedings of waxworms. The latter are optional and used by some breeders as a means to fatten up animals.
The Leopard Gecko Manual by Philippe de Vosjoli said:DIET SELECTION
Currently the best diet for leopard geckos consists of feeding commercially-raised crickets of appropriate size and/or mealworms (Tenebrio molitor), "Pink" mice, wax worms, and king mealworms (Zophobas morio) can be included in small amounts as part of a varied adult diet. The latter are optional and used by some breeders as a means to fatten up animals. Some of the larger commercial breeders have been quite successful at maintaining their animals exclusively on mealworms raised on a high quality diet combined with vitamin/mineral supplements.
Leopard Geckos said:PINKIES
Pinkies are hairless baby mice. Mice? But leopard geckos are insectivores, right? In general, yes, but we will make this one exception, because pinkies are an excellent food for adult geckos, especially geckos you want to breed. If you asked a randomly selected group of leopard gecko breeders to name one secret to getting theit geckos into breeding condition, I'll be most would say "Pinkies!"
The reason pinkies are such a good food is that they are a self-contained package of good nutrition. The liver and other internal organs of the small mice are very nourishing for your lizard. You don't have to "load" them as you do insects, though it does help if you dip their rumps in the vitamin supplement.
Pinkies are best fed live, at least until your gecko becomes accustomed to this food item. Their squirming motion is very attractive to a gecko. Some lizards will eventually learn to take thawed frozen pinkies from your fingers, but until then, feed live ones if possible.
Lizard Care from A to Z by R. D. Barlett and Patricia Barlett - © 1997 said:Keeping: As a group, eublepharine geckos are found in both North and Latin America, Asia, and tropical Africa. Wild eublepharines feed on insects and other invertebrates. Some of the larger species are capable of overpowering and eating small nestlings of ground-nesting birds and rodents. Similar diets are accepted by captives. These geckos adapt well to a captive diet of crickets, common and giant mealworms, a very few waxworms (these have an unhealthy calcium/phosphorus ratio), butterworms, spiders, and other commonly available arthropods. Newly born (pinky) mice are also eagerly accepted by many, if not most of the larger geckos. Offer a varied diet when possible. Although eublepharines are capable of eating comparatively large prey items, food offered should be kept within reason.
You shouldn't feed a leo pinkies. They are insectavors and lack the digestive ability to break down bone. It is advised against feeding your leo mammals.