Two studies examined the effectiveness of the body-worn alarm in out-patient treatment of childhood nocturnal enuresis. The first involved 40 children, previously untreated by conditioning methods, treated with either the body-worn alarm or the traditional pad and bell alarm. The second study compared the body-worn alarm with modified dry-bed training with 48 children previously resistant to treatment. Results of both studies indicated the body-worn alarm was as effective as other methods in terms of the proportion of children successfully treated and was superior with respect to rapidity of response and consumer appeal. Such findings indicate that the body-worn alarm could become the treatment of choice for nocturnal enuresis.