For oral input my son uses a chewy. He prefers the P shaped one or the T shaped one. Ark sells the P shaped one & I’ve found it holds up best for aggressive chewers. My opinion about kids who bite themselves is that they are very anxious about something or in some pain. It could be noise, GI issues, etc. it’s hard to pinpoint exactly what is causing a child’s self harming behaviors. I try to look at the environment from my son’s perspective to try to figure out what might be causing them so much stress. I hope this helps.

My daughter seeks oral input more often especially when she is upset. We got her a chewy necklace that she wears everyday and redirect her to use it whenever she seeks oral input and she tries to bite. My daughter loves crunchy and gummies like textured snacks. We offer these snacks whenever she seeks oral input.

We are doing it for my daughter and she loves it.

Have you tried the Wilbarger brushing protocol? It’s a sensory soothing technique taught by OT’s. It calms my son. If you google it there will be the type of brush used to do this.

Yes I have been doing that for him and he does love it but still bites