if you wish to disinfect use hot water (some iodine or washing soda) and rinse & dry thoroughly before re-use. as an alternative to cages some species (especially north american species) can be "sleeved" outside on growing foodplant. the idea is to make a tubular shape net - much like a stocking. slide the net over the chosen branch or plant. tie one end securely then add the larvae and tie the other end.
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