The concept of delivering A. flavus biocontrol isolates directly to the plants, close to the target, the corn cobs, using a liquid formulation was first proposed by Lyn et al. (2009), who developed a clay-based water-dispersible granule formulation that reduced aflatoxin contamination up to 95% in field experiments conducted in the Mississippi Delta. A sprayable formulation of recycled bioplastic inoculated with the biocontrol strain A. flavus NRRL 30797 was developed by homogenization in water, filtration and dilution. After spraying the bioplastic liquid formulation on corn plants, A. flavus NRRL 30797 DNA was readily detectable on leaves. More specifically, the amount of A. flavus DNA recovered from the leaf surface increased 4-fold over baseline in the first week then steadily increased during the first 3 weeks after spraying, and then remained stable ( Table 1). None of the A. flavus isolates recovered from corn leaves at the end of the experiment had the potential to produce aflatoxins (data not shown). These findings are consistent with this sprayable bioplastic dispersion formulation delivering a biocontrol agent to the leaf surface and also providing nutrients for its growth and sporulation. This sprayable bioplastic formulation is currently under evaluation for delivering spores of two biocontrol isolates of the entomopathogenic fungus B. bassiana. In the first year of field experiments, application of this formulation using a conventional sprayer mounted on a tractor, resulted in a significant reduction of infestation by the tarnished plant bug in cotton ( Portilla et al., in press). In comparison to solid pellet formulations, a sprayable bioplastic-based formulation offers additional advantages, including more flexibility in terms of application timing, and the opportunity to position the biocontrol microbial agent in close proximity to the target. As shown in Fig. 4, once applied to the leaves, a thin film or small spots of inoculated bioplastic particles remain adherent to the leaf surface for a prolonged period. In addition to providing a source of nutrients for microbial biocontrol agents, bioplastic is flexible enough to produce a formulation that adheres to leaf surfaces without adhesives, dispersants or adjuvants.