Severe cleanliness compulsions are best controlled by medication, which must be used, as well as behavioral and cognitive control. On the basis of the understanding that such excessive cleanliness is not necessary, it can be overcome behaviorally in two ways. One is full exposure, such as hitting the soap, hitting a lot, then take the soap off and not allowed to go like this; and slowly, three bars of soap a month, now two bars of soap a month, then become one bar of soap. Systematic desensitization or full exposure, this method is possible, for patients with OCD, with such methods can be very effective.