We have tried to help. You need pinhead crickets or fruit flies. You can purchase both online. However it is likely most of your mantids will be dead before you get the food. Even if you get the food in time you will go through the flies very fast and not have time to culture more. Personally I think you should try to order about 1000 pin head crickets and see if you can save any of the mantids. A lot of mantids always die anyways.