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Particulate matter (PM) emission rates from two high-rise layer barns (barns 1 and 2) were measured from August 1, 2004 to January 31, 2005. A commercial particulate impaction curtain (PIC) installed parallel to the pit sidewalls of barn 2 removed PM by impaction. Particulate matter before and after the PIC were monitored with the Tapered Element Oscillating Microbalance (TEOM) for PM10 over a 48-hr period once or twice per week with a gravimetric sampler for total suspended particulate (TSP). Average untreated daily mean PM10 emission were 30 and 35 mg d-1 hen-1, while mean TSP emissions were 281 (control) and 152 mg/s (treated) from barns 1 and 2, respectively. The mean treated PM10 emission rate was 22 mg d-1 hen-1 and was decreased by 41% based on measurements before and after the PIC, but some dilution occurred from backflow through nonoperating fans. Some important practical issues currently hinder the use of PIC in high-rise layer barns.