Enteroviral RNA, indicating the presence of virus, was detected in samples from households. Where enteroviral RNA was found on a tap handle, illness had been reported 2 weeks prior to sampling and where a positive result was obtained from the toilet bowl, 2 of 3 children were ill at the time of sampling. This work demonstrates that tests for bacteria and ATP may not give a total view of the microbiological problem in the home. Epidemiology and Infection 1998;121:673-680.