Along with using cricket chop from mantis place, I use these cricket cubes from my local pet store that are safe for insects and reptiles. The only reason I even have them is because I had to resort to crickets when I ran out of flies one day and had no other food to feed the crickets. The crickets really enjoy them, though, and devour them before lettuce, cricket chop, or whatever else I feed them. I give my crickets a huge variety of food to eat, including, but not limited to, romaine lettuce, dog/cat food, cricket chop, cricket cubes, other leafy greens, and dry oatmeal which doubles as a substrate. I also dip the cricket cubs in a bee pollen mix to give the mantids extra nutrients. I use a portion cup with humidity foam for water/humidity. Hope this helps.