[Future perspective in the use of disinfectants]

The effects of different combinations of quaternary ammonium compounds (Sanitized, Sanigard) on faecal and soil organisms demonstrate the usefulness of these products (dilution 1/100,000). A contact time of 30 seconds to 4 minutes is sufficient for bacteriocidal activity. Materials treated with these compounds retain their bacteriocidal activity after 10 washes with boiling water and for over a month with normal usage. The disinfection of a door handle contaminated with Vibrio cholerae or Salmonella typhi destroys these bacteriae after 30 seconds and prevents re-contamination for a month. Therefore, they are very useful in the control of diseases caused by bad hygiene.