<<Disclaimer: Verify this information before applying it to your situation.>>
 
I have not found any problems with the Erehorn - Twice Rice Cereal
however I have not tried there poppets - corn allergy.
 
I have two other cereals I use on a regular basis there are:  Puffs and
Honey by The Breadshop and a hot cereal, Red Bob's Mill - Creamy Brown
Rice Farina.  It is absolutely delicious.
 
Early on this post somewhat stated that Rice Krispees are gluten-free.
I disagree they contain malt.  Therefore, rice krispees cereal and rice
krispees snack treats are not gluten-free.