Silkies are great! Like Pixie said, they're highly nutritious and more filling. They also have more calcium in them compares to some other bugs, so that can be good too (if you're leo's are like mine and dont like to eat their calcium). My leo's get silkies one day, then skip a day, then mealies, then skip....you see the pattern? It's just caouse I have one leo that actually don'te care for the silkies, so I have mealies too!