Maybe. I bought crickets at a reptile show and I bought crickets from Ghanns. I'm trying not to feed any crickets at all for a bit, then will go back to the Ghann's crickets. I'm having trouble finding enough food that is small enough and not crickets. They did eat a few silk worms for the first time, but that takes FOREVER to put a few silk worms on branches. I couldn't imagine crickets so young would be affected by artificial vitamins. I did feed them Cricket Crack Montane and fresh fruit, grass and veggies for probably at least a week before I fed them.