HI BusyMomWifecaretaker,
Your uncle's behavior is causing you distress and I understand how you feel, because it is inappropriate.
Since you became his caregiver only after he developed SZ, you have no way of knowing whether this behavior happened previously.
SZ is an illness that could result in cognitive deficits, and these cognitive impairments aren't alleviated by the currently available medications. There are drugs in the pipeline that are being researched for this.
My tendency is to tell you that this behavior could be because of the SZ; however, that doesn't excuse his behavior even if it's part of the illness.
My gut is telling me that you would benefit from finding him a residence he can live in.
My tendency [and I'm not a guy, but this is my tendency] is to want to give you some ideas as to how you can solve this problem, instead of simply commiserating with you.
How long has this been going on? How long has he lived with you? I understand he might not be able to live on his own.
The problem as I see it is that he lacks the insight that there is something wrong with his behaviors. How to get him to have this insight so that he can change his behaviors is the trick. You could tell him not to do that because it's inappropriate yet I'm assuming you've tried every tactic to get him to change.
So again, depending on the situation, a residence might be helpful as you have four kids, and some are a young age. You need help, you can't do it alone.
Respectfully,
Christina