Welcome, are you planning on keeping it? If so you are going to need to upgrade from a milk jug but I am sure you knew that. Its best to buy the food instead of catching it. As you know, it is daunting after awhile and you cant be certain the bugs are free from pesticides and other harmful chemicals. I am sure it would enjoy some crickets, earthworms, waxworms, mealworms etc. They can all be found at petstores and such.