i see at least 2 cases. first, those who fall in difficult circumstances. second, a bit of first and some underlying mental issue. for the first, some have jobs so you just need to provide subsidized housing. some has no work, for those cases need to provide work and housing. for those who fall in 2nd case, they need to be put in care houses so that there will be people to take care of them unless if they are still functional and just need a bit of rehab or something.