<<Disclaimer: Verify this information before applying it to your situation.>>

Someone asked the list recently if Tostitos Chips by Frito-Lay are
gluten free.  I checked with my daughter who works at their Plano, Tx
headquarters and she had their Consumer Affairs verify they are, and
they do not dust bags with flour.

They have a gluten free list of their products they'll send to you if
you call their Consumer Affairs hotline of 1-800-352-4477.

Jan