My 6 year old is waiting for assessment for asd, and has a variety of different sensory issues but the chewing is a new one. It started a few weeks ago with him chewing the fronts of his tshirt and making them wet. Then he chewed a couple of teeth out of the zip of a hoody and ruined it. He doesn't do it all the time but if he is sat playing with the iPad, or doing homework he does it. He chewed his baseball cap on a coach trip this week too, and quite often tries to chew the curly wire for his headphones.
I've been trying to discourage with the clothes as he ends up wet and uncomfortable, and wanting a fresh tshirt all the time. I've also tried to divert with allowing one toy (a bendy smiley man) that is for chewing and he does quite like that.
Would you suggest getting something designed for chewing on to divert him from ruining other clothes, toys etc, or is that likely to encourage the chewing more? What chewy toys are good? I've been looking at the pendants but it would be just like him to reject what I buy and carry on with the tshirts 