Wow! Thank you all for the advice and support. We do have an alarm system for the house, because when my eldest was younger he was a flee risk due to his autism. I wish we could get a nanny cam system, but it's out of our budget, unfortunately.
I'd thought of getting an alarm for his bedroom door, but he shares the room with two other kids, and they do have to go to the bathroom in the night from time to time. Plus the youngest is afraid of having the door shut at night.
I like the idea of a safe of some kind, we'll have to look into that ... at the very least it might end up being more work to get into than he'd be willing to put to the task. His unmedicated attention span isn't that long.
We had another intake appointment to put him on another waiting list for therapy services last night. We'll see which agency comes through first. The waiting is the hardest.
Again, thank you all so much for your support. It means so much to have friendly voices in the storm.
Yesterday was a good day. We had field day at school, and then family picnic, and then came home for a few hours before our intake appointment. All the kids were happily worn out and there was something almost like peace in the house for the day. Woo Hoo!!!
We'll see how today goes.