I have the advantage of being a user of the New Leaf service in my normal day-to-day job in child welfare. We know that the program offers meaningful change to our families. When we get men who engage in that service, they typically don't come back. If they don't engage in the service, it's on their mind or whatever, and it's likely that they may come back, or they opt out and get another service.
However, men who engage in New Leaf for a six-month period typically are there because they want to be there. They typically get it, and things start to change for them. That's not to say they won't run into trouble, but that's one of the reasons I became part of New Leaf: because I saw the success it was having and I wanted to support it.