The pest control difference.


ContraPest is a proactive, long-term solution that targets rats by population, not by individuals. Better yet, it’s designed to be humane and doesn’t travel up the food chain. Deploy this revolutionary liquid bait within an integrated pest management program for an effective and comprehensive approach to successful rat pest control. Before you know it, the infestation you once thought impossible to control will be suppressed and managed.


Why ContraPest?

Combats bait aversion
Reduces individual rat’s fertility quickly
Low exposure risk to pets/children
Easy to set up/replace tanks
Minimizes population rebound effect
Versatile tool for pest management professionals

There’s a lot to
learn about rats

With our background in science, it’s no secret that knowledge is our greatest tool. We invented ContraPest because we learned about rat pest populations and studied their biology. What rats eat, where they nest, their size, shape, color, their mating habits, etc.; in the world of pest control, all this information is key.

The Rebound Effect

Traditional pest control tools are reactive: they eliminate rats quickly when populations boom. However, without fertility control, it only takes two rats to initiate a rebound, growing the population back to its original size or larger within a matter of months. Under the right circumstances, a rat population may never be fully controlled with lethal methods alone.

The active ingredient(s)

ContraPest has two active ingredients: 4-vinylcyclohexene diepoxide (VCD) and triptolide.

Triptolide, derived from the thunder god vine Tripterygium wilfordii, has been used in traditional Chinese medicines and other over-the-counter supplements. Triptolide affects the reproductive capacity of both male and female rats. VCD is an occupational chemical that selectively destroys ovarian follicles in rats.

We get results

Reining in rat reproduction resulted in significant savings for 2 poultry farms.

A win for
Washington, D.C.

ContraPest was deployed for 16 months in our nation’s capital city from June 2019 to October 2020. Depending on location, activity was reduced 94-99% with 98-100% reduction in juvenile rats.

Contact Us

Call 1.866.886.RATS or fill out our form to learn more.

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Contact Us

Call 1.866.886.RATS or fill out our form to learn more.

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