Or at least that's been my experience so far in any city I have lived in that has one near my current location. One place I even moved to and from again twice, and got to see the before and after through the decade essentially. It's like night and day. Absolutely no one will ever be able to convince me otherwise that these programs are a good idea, especially when the best idea is to just remove these people from urban centers by tossing them into rehab out in the country side where they can't get these drugs easily.
I've seen that work wonders by comparison; and it doesn't ruin neighborhoods which gives NIMBY's a legitimate excuse to do things like round up the homeless and put them in jails. Which I do not agree with, but understand their grief. The very act is a breach of their natural rights as a human being, and let's not get me started on my opinions about how housing should be a natural human right irrevocable by anyone or anything.
The yellow brick road is paved not by the demons among us, but those who think themselves angels.
Edit: I'm going to sleep now folks, so if I don't respond to anyone after this point of 7:15am CST-6, that's why. You all have a nice day, and/or a nice night.