We have been evaluating the effectiveness of three types of commercial disinfectants include ammonium hydroxide, and phenol and ammonium Quaternary in concentrations of 5%, 10%, 20% of each, to the effect on the non sporulated cysts ovales for Coccidia type stiedae, which affects the liver and bile ducts in the rabbit, and cause inflammation and hyperplasia in liver, gallbladder and biliary canal infectious, and necrotic lesions with white color in the liver tissue, in addition to the foregoing, also examined some of the environmental effects of factors, including temperature , pH and presence of organic matter.