My son used to wander. Our sheriff's department had GPS bracelets. We went once a month for a battery change. If my son wandered and I couldn't find him if I had to call 911 I would tell them he had the bracelet and they would immediately notify the sheriff's department so they could track him.

My sister in law swears by probiotics says my nephews focus increases and outburst decrease! I would look up best probiotics for autism.

Re-Direction. Always keep a (Favorite) thing with you and when they start experiencing 'Melt-Downs' give it to them. You'll quickly learn what's a 'Tantrum' and what's a 'Melt-Down'.