Residue levels of azinphosmethyl and captan were determined from blotter paper patches attached to the clothing of personnel participating in an orchard spray program. Average exposure of 1.74 mg/man/hr for azinphosmethyl and 1.94 mg/man/hr for captan were extrapolated from mean residue values obtained from analyzing the patches. Azinphosmethyl residue found on apple and peach foliage had been reduced by 69% by the tenth day post-application, while captan residue had been reduced 50% for the same period. There was no evidence of a buildup of either azinphosmethyl or captan on treated foliage as the season progressed. © 1978 Springer-Verlag New York Inc.