The repellents and cardboard paper were
supplied by Interink Co. Ltd. They were wintergreen
oil+chilli, wintergreen oil+peppermint oil, bergamot oil,
wintergreen oil+peppermint oil+bergamot oil and
bergamot oil+geranium oil, designated as F1-F5. These
substances had been registered for patent number
0901002635. The repellents were freshly sprayed on the
cardboard paper before being placed into the apparatus