Geckos should primarily be fed live insects like crickets, mealworms, and Dubia roaches. Some species also eat fruit or nectar. One challenge with gecko diets is the need to provide nutritionally balanced insects. Dusting them with calcium and vitamin supplements is crucial to prevent deficiencies. It can be challenging for some pet owners who may be uncomfortable handling live insects. Additionally, ensuring variety in the diet can be tricky as some geckos can be picky eaters. Properly addressing these dietary challenges is essential to maintain your gecko's health and well-being.