I have been ordering in 500 2 week old crickets for my Fire-bellied toads and Leo Geckos. The crickets come in a small cardboard box with egg carton filler. The last couple of boxes have revealed a worm like larvae in with the crickets. They are about the size of 2-3 week old crickets, black in colour, topedo shaped, with a bunch of legs and bristles along the sides. Does anyone know what they are? Are they safe to feed to my animals? Right now I am squishing them-they are very crunchy sounding!!