I do not know, sorry. I had a mite problem, too, with my Rhyparobia sp. "Malaysia". I put the Rhyparobia sp. "Malaysia" into a cage with Blatta lateralis or (not sure which I did, either moved them or did not move them) added some Blatta lateralis into the Rhyparobia sp. "Malaysia" container and the mites started disappearing. I do not know why the mites started disappearing. These mites I think came from my fruit fly cultures, but they seemed to weaken my Rhyparobia sp. "Malaysia" (I do not know if the mites were the cause of weakening the roaches either.).