While it seems there's no way to avoid trace levels of glyphosate in pelleted bird foods, I've decided to go with a 100% Harrison's solution for the pellets that my guys get. At least Harrison's contains a higher level of organics than many of the other options. Reasonably, sticking with Harrison's may reduce the potentially higher or marginal levels of glyphosate to mere trace levels. However, I'm also aware that contamination levels among a product of any single brand may vary from batch to batch. And since there's no easy way to consistently check glyphosate levels (there are test kits available... but I'm unsure how efficacious or expensive they may be), relying upon Harrison's claim of organic ingredients may be the best option at this point.