Quoting twingals:" 9 months and it's pretty severe in that if they eat something tainted they have bloody stool. I actually just found some puffs at Target that seem clear so I'll give them a try."
I have had three children with severe milk and soy allergies. I understand where you're coming from. Babies R Us sells a brand of puffs that does not contain milk or soy. My youngest DD was able to eat them.