The urea existing in broiler manure is converted into ammonia gas by urease enzyme and consequently the concentration of ammonia rising in the poultry house which results decline on broiler productivity. To reduce in-barn ammonia level a patented ammonia trap system is developed System is looking like a miniature cooling tower. This so-called cooling tower is filled by the polyethylene balls to increase surface area and balls are wetted continuously by 5 M of phosphoric acid solution. In-barn air forced to pass through within the balls, ambient ammonia reacts by phosphoric acid and ammonium phosphate obtained as a by-product which can be used as a mineral fertilizer. Initial results revealed that the system is effective on ammonia reduction in barn and it was patented by Turkish Patent Institute with the patent Nr: TR 2012 13292 Y. System is under development stage; however, meanwhile we did not maintain patent protection. Thus, we would like to encourage farmers to use this system to reduce ammonia levels in their facilities to improve their benefit as well as reduce atmospheric pollution.