The subject product, SERENADE® MAX, is a fungicide preparation containing 14.6 percent by weight of QST 713 strain of Bacillus subtilis, as the active ingredient. According to the EPA label, SERENADE® MAX is a broad spectrum, preventative product for the control or suppression of plant diseases. Currently it is registered with EPA registration number 264-1151.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N255188