Autism / Autism Spectrum Support Group
Autism is classified as a neurodevelopmental disorder which manifests itself in markedly abnormal social interaction, communication ability, patterns of interests, and patterns of behavior. Although the specific etiology of autism is unknown, many researchers suspect that autism results from genetically mediated vulnerabilities to environmental triggers.
The school tried "chewelery" and it worked for a couple weeks, but just when I was about to buy some for home it stopped working. I remember a post a long time ago from a parent who tried straws. I tried that too. It works (for us) better than chewelery, but still only works sometimes. We've also tried gum in the past. He chews it, but almost always swallows it.
Good luck.