Most seed producers label their seeds "Non-GMO", although there are a very limited variety of actual GMO seeds. It's marketing.

I'm not that concerned with plant DNA infused with BT. It is a natural insecticide that is used widely in "organic" farming. What does concern me is the overuse of glyphosate (Round-Up) since it never seems to go away except into our ground water and aquafers.

There is literally nothing non-metalic that doesn't test at detectible levels for the horrible stuff. Really! Your leather car interior, your home's carpet, your shoes, even yourself, regardless of your eating habits. It is one of the reasons the WHO recently stated that there is no longer anywhere in the world where it is safe to drink rainwater.