How about good old ultraviolet light (esp. UV-C ~ 254 nm from a germicidal
lamp) as a direct acting agent? With UVL you can control the student's
exposure risk and there is no need for disposal of nasty chemicals!
Charles A. Miller III, Ph.D.
Environmental Health Sciences, SL29
Tulane Univ. School of Public Health and Tropical Medicine
and Tulane-Xavier Center for Bioenvironmental Research
1430 Tulane Ave.
New Orleans, LA 70112
(504) 585-6942 fax: (504) 584-1726
rellim at mailhost.tcs.tulane.edu