Collect DNA samples or Forensic Evidence. An independent study showed 31% more DNA yield when using the Bode SecurSwab Collector Bode SecurSwab Collector are designed to collect DNA samples or forensic evidence. The four matching barcodes on the wrapper provide the end-user with control in labeling the sample and help maintain chain-of-custody control. The Bode SecurSwab S.I.T. Collectors are available in a case of 100 collectors, in individual foil pouches. The foil pouch protects the indicating desiccant from moisture until opened.