Cockroach counts and house dust allergen concentrations after professional cockroach control and cleaning.

Background: It is known that cockroach allergen exposure is both frequent in inner-city homes and associated with asthma severity in children living in those homes. However, there have been few studies of interventions to reduce exposures in this setting.

Objective: To evaluate the effect of short-term professional cockroach control and intensive cleaning on allergen concentrations.