EDIT- I would also not trust "organic" garden seed. Some of these could be treated with organic stuff like the bacteria Bacillus thurigensis, which is an organic way of killing insects. It is used to kill mosquito larvae, for example, after floodings and infestations. If in doubt, contact the producer if their seed are treated, the people in the store won't know. These seed are fine for buttlerflies, because they will visit the flowers, and not eat the seed which you plant in the ground.
I have asked to the manufacturer that I plan to use it to feed ants in an ant farm and if they are treated with anything synthetic or organic that can kill insects. The reply was it can be given to the ants and it is organic. TBH, I was expecting an indirect answer something like it is not treated but they cannot guarantee if it is safe to use for this purpose, but the answer was quite direct.