Man, that is why I probably will never keep insects. Those things are way small. And if I lost one or some it would be a nightmare.
I had some Pachydactylus tigrinus - Tiger Gecko. These things are tiny. The ones I had were not full grown yet. They were about an inch if that. Well while feeding them my 7 year old cousin decided to grab one and not tell me. Later I check the cage and they were no where to be found. I wrote off my loses by the end of the day. Knowing trying to find a little thing that could be eaten by adult field crickets is almost impossible. Especially when the night temps outside are going below 65 farenheit.
About a week later I am outside the front of the house and see a tiny thing that I thought was just a bug moving on the steps. I take a closer look and there he was. What luck huh.