Hmmm.... I've got three cultures that just went to mite over time. Can't even see any worms anymore. They've been outcompeted. I'm not sure what the secret is... I've tried more food, less food, varying degrees of light, different medias (coconut coir, peat, sponge), different levels of moisture... Not sure what else to try. Mite paper isn't going to help me keep a culture completely free and stop them from taking over.