The Iowa Pesticide Act provides two options for renewing pesticide applicator certifications. An applicator may choose to renew by re-testing every 3 years or by attending an approved instructional training every year.  Recertification by training requires participation in two hours of approved instructional training each year, in each category in which the applicator is certified. Some programs may be approved for more than one category and simultaneous credit hours are possible.  Applicators will not be allowed to makeup hours that they missed in a previous year, nor will they be allowed to carry forward excess credits hours.  The Iowa Department of Agriculture and Land Stewardship approved the ISU Greenhouse Short Course (GSC) for two hours of re-certification credit in commercial categories 3G, and 10 or as a Private Applicator.  Applicators must attend the entire GSC to receive a certificate of attendance at the end of the day.