I work with keeping crops identifiable and not generic quite a bit. I ran across these tips that is something I believe in and try to do.
If GMO corn hybrids planted within 50 feet boundary, harvest the border rows separately and market the harvested crop as commodity corn.
Clean the combine, bins, and equipment.
Adjust the combine for best grain quality.
Avoid rocks and dirt when harvesting. This includes combining, transport and storing of the crop.
Transportation and Storage
Record which fields (hybrid/varieties) went to which storage bins.
Use bins with good aeration - field dry corn when possible to maintain grain quality.
NO chemicals to be used in storage units - use diatomaceous earth products (Protect-It® or INSECTO)
Clean truck hoppers/beds.
Scout fields for weeds, insects, and presence of other commodities (volunteers).
Visually inspect storage and hauling units to be sure that they are clean.
Communicate commodity and Identity Preserved status to driver.
Inform drivers as to Identity Preserved status of loads.
Inform drivers as to the specific hybrids/varieties being delivered.
Be sure to communicate to the Probe/Scale personnel the Identity Preserved Status.
Use the company protocol system for proper Identity Preservation.
Do you believe it is worth the time and money to keep your grain identified and not dumped into one big pile as corn or soybeans?