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ContraPest® is a liquid rodent fertility control bait that helps you tackle persistent rodent infestations with unprecedented success.

ContraPest is an innovative technology that targets the reproductive capabilities of Norway and roof rats. By reducing reproduction, ContraPest can be the anchor to your Integrated Pest Management (IPM) program and magnify the success of your IPM methodologies.

SenesTech is changing the paradigm of pest management by targeting the root cause of the problem: reproduction.

There are many tools available to combat rodent infestations. Unfortunately, pest management professionals still find themselves at a disadvantage – rats reproduce at an extremely rapid rate. As a fertility control solution, ContraPest provides the missing link within your IPM program.

rodent reproduction

The Rebound Effect:

One of the most effective, long-term ways to manage rodents is by using a combination of tools that work together to magnify the efficacy of your pest management protocol. Integrated pest management (IPM) is based upon this plan.

However, no matter how many traditional tools we use, some rodent infestations are still a problem because the rapid rate of rat reproduction is working against us.

When traditional measures are used to control rodents, the populations decline almost immediately. But if the population is not eradicated and future infestations are not prevented, the survivors and any immigrants can rebound back to the initial population size within three to nine months.

ContraPest gives you a way to stop these population spikes and consistently keep populations down more effectively.

Senestech Statistics graph

**USDA 3rd Party Summer 2015 Study
*** Protein Production Farm, NC Spring 2015 Study

A Proven Solution:

ContraPest has been studied in both lab and field studies. Together, these studies reinforce that ContraPest is a highly attractive, liquid contraceptive bait, that with repeated consumption, was effective in reducing rat populations in a variety of settings. One reason why, is that rats require consumption of 10 percent of their body weight in liquid, making ContraPest an attractive resource.

CASE STUDIES: ContraPest is a proven solution for your toughest rodent infestations.

Carmen ReinoAnchor Pest Control has provided pest management solutions for residential and commercial applications in New York, New Jersey and Pennsylvania for the last 40 years. After facing multiple difficult infestations, the East Brunswick, N.J.-based firm began looking for a new tool to help “get ahead” of the rat reproduction rate.

After using ContraPest in both residential and commercial settings, the company saw a definitive decline in rat populations. As populations have declined, the Anchor team has been able to optimize their bait stations — helping reduce the number bait stations and improve their efficiency. Most importantly, with ContraPest providing fertility control, they have avoided the population rebound, and reduced the need for maintenance calls.

Carmen Reino, president of Anchor Pest Control, explains how his team implemented ContraPest and the impact it had when used by him and his team in key accounts. 

CASE STUDY #1: ContraPest used in a commercial setting as part of an Integrated Pest Management Protocol.

IPM Pyramid“We used ContraPest in a large commercial, multi-family property in the Tri-state area. We had been fighting an on-going infestation that experienced multiple population rebounds, and traditional methods were not able to get it under control. We implemented ContraPest as part of our IPM program, and immediately noticed a decrease in the infestation after just three to four weeks. Through on-going optimization of the bait stations — specifically, making sure each was in a foraging location where the bait would be consumed — we continued to see significant reductions in population. Due to the success of our new IPM protocol, including ContraPest, the client awarded us an additional site, a 1,000-unit property to manage using the ContraPest product as part of the IPM program.”

CASE STUDY #2: ContraPest used in a residential and commercial setting as a standalone, fertility control solution.

“Anchor Pest Control implemented ContraPest in a residential structure, as a standalone solution as our customer was wanted a product that would not kill rodents,” notes Reino. “After initial success, she also asked us to expand usage to her veterinary office. With ContraPest deployed, we have prevented the population explosion typically seen this time of year, and the population is currently below 10. We estimate it will continue to diminish with natural lifecycle. The customer is very pleased with the results and relieved we could deploy an alternative option. While it is not our core strategy, in cases like these, it is great to have an option to offer our customers, rather than lose their business.”

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ContraPest review

Implementation Tips from Carmen Reino:

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Where Can ContraPest Be Deployed?

ContraPest can be deployed in a variety of indoor, non-food and exterior settings within 1 foot of a manmade structure. The delivery system of ContraPest is designed to minimize handler exposure. It is dispensed inside tamper-resistant bait stations, minimizing the risks to non-target species. Please read and comply with all label instructions.

  • Agriculture — Livestock and farm animal facilities
  • Multi-family residential
  • Transit areas, including airports, bus stations and train stations
  • Animal hospitals
  • Aviaries
  • Commercial settings and power stations
  • Greenhouses and indoor and outdoor nurseries
  • Hospitals and healthcare facilities
  • Hotels and motels
  • Industrial buildings and warehouses
  • Landfill and waste management sites
  • Pet stores and kennels
  • Schools
  • Shopping malls
  • Zoos and wildlife parks

Locations Within Structures:

  • Attics
  • Roof and roofing areas
  • Basements
  • Crawlspaces
  • Exterior areas within 1 foot of structure
  • Fences
  • Non-food areas

Bait Box Image

NOTE: For indoor non-food use, and within 1 foot around external perimeters of transit systems, public and private buildings, commercial residential structures, and/or other man-made structures. Do not place bait stations where they are likely to become submerged or inundated with water. ContraPest is a Restricted Use Pesticide, due to applicator expertise. Please read and comply with all label instructions.

Quick Facts about ContraPest

  1. Effective

ContraPest is highly attractive to rats because of the high fat content and sweet taste. Rats come back for more, and their fertility is reduced upon consumption.*

  1. Targeted Solution

ContraPest is formulated specifically for rats, and the active ingredients metabolize to inactive within 15 minutes, minimizing risk to predatory animals.

  1. Proprietary Delivery System

The delivery system for ContraPest is designed to minimize handler exposure, and is dispensed inside tamper-resistant bait stations, thereby minimizing the risks to non-target species.*

  1. Sustainable Population Reduction

Rodent infestations decline as the number of offspring is reduced. With continued consumption, the population remains low, allowing you to shift your account management to maintenance vs. fighting a potential population rebound.*

* When used as directed. Always read and comply with all label instructions. ContraPest is a Restricted Use Pesticide, due to applicator expertise.


For more information on ContraPest, visit Senestech.com/contrapest or call SenesTech at 928-779-4143, ext. 820.


This page was produced by North Coast Media’s content marketing staff in collaboration with SenesTech. NCM Content Marketing connects marketers to audiences and delivers industry trends, business tips and product information. The Pest Management Professional editorial staff did not create this content.