I saw the splashes on the sides of the mantis case, but I just thought the girls had splashed some milk or yogurt onto the sides of the habitat when it had been sitting in the middle of the kitchen table. But, when Dwayne tried to scrape his fingernail across one of the dried drops of white... something... to clean it off the side, that's when we realized the splashes were actually on the inside of the case. So, the splashes aren't milk or yogurt. As disturbing as it is, they are internal cricket juices propelled against the side of the cage when the crickets are squeezed in the mantis's death grip.