In the 1970s a great new use for the rubber band was discovered: self-administered aversion therapy. It didn't go so well in some cases, like for "obsessoinal thinking", the outcome being the opposite of the one intended.
The first paper discusses two cases: one of hair-pulling (trichotillomania) and one of... homosexual ideation. Initial success but relapse and discontinued treatment are reported in the first case (hair pulling), but claimed "cure" in the second case. The second paper (with two negative results) discusses a case of paranoid schizophrenia and one of sexual fantasies including cheating on spouse and homosexual acts. I think most mental health professionals today would see these cases (except the hair pulling case perhaps) as inappropriate for aversion therapy, and some for any therapy (homosexual fantasies in particular).
Did self-administered aversion therapy (with rubber band or otherwise) prove ineffective in general? Or did it find some niche where it is considered successful nowadays?