OvoControl® P 0.5% (nicarbazin)

“Birth Control” for Birds

OvoControl Birth control for birds

Product Information

OvoControl is a ready-to-use bait that interferes with the reproduction of treated birds, causing the population to decline through attrition.  This effective and humane technology is especially useful for managing pigeon flocks in larger areas without having to resort to poisons and their associated risks.

Recommended Use

Baiting can begin at any time and OvoControl has been shown to have a wide margin of safety and efficacy.  Flat rooftops are the ideal area to bait pigeons.  No special license is required to purchase or apply the product.


Pigeons breed rapidly – just five mating pairs can produce up to 400 pigeons in only two years.  Fortunately, the life-span of urban pigeons is short, limited to just 2-3 years.  When applied according to label directions, OvoControl interferes with egg hatchability.  Since no new birds are hatching, the population of birds declines naturally and continuously.  Field studies show a reduction of approximately 50%, annually.  Recently collected data at a monitored site in San Diego reflected an 88% decline over 28 months.

What to Expect

Contraception in a population of pest birds leads to a process of attrition.  Instead of constantly creating new offspring and expanding the population, the flock gradually declines through natural causes — disease, nutrition, predation, etc. Effects are visible within a few months of beginning the application of OvoControl and continue over time. You can expect the population to come to equilibrium at roughly 5 to 10% of its starting point.


The retail price of OvoControl is $8.00/lb. The cost to treat a flock of 100 pigeons during the first year averages $6.90/day – the one-time cost of the automatic feeder kit is $251.99.  Due to declining pigeon numbers, the cost of bait declines by roughly 50% during the second year of treatment.  Visit our convenient on-line store for pricing and ordering details.

Application Rate

OvoControl P is applied with an automatic feeder at a rate of 1lb/80 pigeons per day.  Overfeeding or underfeeding the birds can be counterproductive.  See the OvoControl User’s Guide for details.

Registered by EPA

Registered by EPA (Reg. No. 80224-1) and approved in 49 states (New Hampshire is missing), OvoControl is ideal for large areas where some pigeons can be tolerated but where a substantially reduced population is desired. OvoControl is non-hazardous and is advocated by the Humane Society of the United States (HSUS), American Society for the Prevention of Cruelty to Animals (ASPCA), Audubon and Peregrine Fund.


OvoControl only has a contraceptive effect in birds and has no secondary effects in birds of prey. OvoControl is considered a pesticide and care should be taken to avoid administration to non-target birds and other animals.  See the link for a current copy of the EPA-approved label.