You don't. There is a missing piece to this story. This is not the way the rest of the world submits a stool sample. I believe there is a little village on the Amazon River served by a wizened witch-doctor that does it that way. Your doctor is supposed to provide you with several-stamped envelopes with a special card for each envelope with a little pocket. You take a smear with a Q-tip (included with the kit) and put in the special indentation on the card. Then there is a special plastic seal and the entire unit gets mailed back. They often ask for several such samples.
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