"As I'm sure you do, I want my little leopard gecko, Oz, to live for twenty-five or more years. I don't buy mealworms off of Petco.com, but at the store a case of 100 regular mealworms isn't too pricey (especially compared to crickets). Experts say that the longest living leopard gecko (31) ate only mealworms, with small offerings of wax worms once a week. So that is what I am doing so I'm hoping Oz, now 2 1/2, will set another longevity record. (Also if you feed crickets you have to go to the pet store at least once a week, ughh!)"