The study was conducted in 1965-66 to ascertain whether an additional visit by a senior member of the domiciliary service staff at the NDTC, such as a Medical Officer or the Chief Public Health Nurse, could help retrieve defaulting patients, after three visits by the Health Visitor during a period of 2-3 weeks had failed. Of the 786 non-cooperators, 531 were visited by the Chief Public Health Nurse. The results showed that more than half (58%) of the non-cooperators could be retrieved by the senior staff member, while 24% completed the treatment thereafter and, 8% were still continuing. Only partial success was achieved with the remaining 16%. Counting those who did not attend at all (331) and those who did not complete treatment after being called (73), the experiment was successful in nearly half the cases (382 out of 786). Therefore, it is recommended that the health visitors’ attempts to retrieve the defaulters must be supplemented by at least one visit from a senior staff member for maximum effort.