Learn more about the science.

Read about the studies upon which we base our product and claims for the safety, efficacy and quality of OvoControl®.



The active ingredient in OvoControl® P, nicarbazin, was originally developed by Merck, the pharmaceutical company,  in the mid-1950’s.  The compound remains in widespread use today (NICARB), world-wide, to control coccidiosis, an enteric disease in poultry.

Nicarbazin’s interference with egg hatchability represents an unwanted side-effect in chickens.  Together with the USDA National Wildlife Research Center in Fort Collins, CO, Innolytics developed OvoControl as a useful new tool to help manage pest birds.

The following white papers provide further details on the most common technical questions and concerns.

  • The Effects of OvoControl® P (nicarbazin) on Non-target Birds and Other Wildlife (PDF)

  • The Secondary Toxicity of OvoControl® (nicarbazin) in Birds (PDF)

  • The Absorption, Excretion and Environmental Fate of Nicarbazin (PDF)

  • The Efficacy of OvoControl® P (nicarbazin) in Feral Pigeons (Columba livia) (PDF)

  • The Absorption, Egg Hatchability Effects and Acute Toxicity of Nicarbazin (PDF)

Our building has used OvoControl for two years and the population is down 80%.
— Gary Stang, Strip Mall


Dirk H.R. Spennemann, Melissa Pike and Maggie J. Watson (2017) "Effects of acid pigeon excreta on building conservation", International Journal of Building Pathology and Adaptation, Vol. 35 No. 1, pp. 2-15, https://doi.org/10.1108/IJBPA-09-2016-0023. (PDF)