But be very, very careful to only target the pest insect, because any type of treatment, organic or otherwise, can also kill monarchs and their eggs larvae. Use distilled water at room temperature to moisten the paper towels. Once the roots are a few millimetres long, they are ready to be delicately transferred to a small container filled with your growing medium of choice rockwool, coco-fibre, or soil. Source: https://vendors.mikolo.com/forums/discussion/introductions/start-growing-your-own-supply-now