Hello I have a chinese mantis ooth. this is my first time with any typ of mantis and was hoping for some help. i know how to hatch the ooth and i know that there will be ALOT of little guys but I was wondering if (like slings) you could just prekill large roaches and have miltiple mantids eat it? or do I NEED to get them the fruit flies? if i need to get the fruit flies were do i get them?