A biopesticide composition for pest management that includes a sweet whey product and spores mixed with a carrier to form a growing environment in a target region. The growing environment forms a micro-factory that is suitable for spore growth, such that the number of spores substantially increases from a first spore concentration prior to application to the target region to a second spore concentration after a period of time. The biopesticide composition may include other additives that modify the micro-factory in a manner that facilitates spore growth and/or increases the probability that a target pest, e.g., an insect, will come into contact with the spores.
