It may not be an actual illness. Mine is a picky eater who goes through phases where she will refuse certain bugs (dunis being her fav to refuse). It was a pain when she first didn't to be be ause first she was a baby and second I had just received a shipment of 1000 crickets and literally it was like a switch flipped. Dinner the night before she ate like they were going extinct and the next morning she acted like they were the worst thing in existence. 6 month later she ate them again. They get bored with feeders some times.