You’ve got questions. We’ve got answers.
The active ingredients in ContraPest are:
- 4-Vinylcyclohexene diepoxide (0.09604%)
- Triptolide (0.00118%)
ContraPest provides a cumulative effect, thus the more a rat consumes, the greater the result. However, it may take several months before a significant decrease in population size is noticeable. ContraPest is a contraceptive, not a sterilant, so a continuous supply maintains reduced populations.
In the initial submission for EPA registration, the shelf life component was waived/deferred, with the understanding that this information would be provided at a later date. However, we are currently working on providing the EPA with data and documentation to calculate shelf life as part of our continuous label improvement efforts.
ContraPest® is a registered with the US EPA as a General Use Product when used as directed. However, ContraPest continues to be a Restricted Use Product (RUP) in New York, Connecticut and the District of Columbia. ContraPest is General Use in California but continues to follow and observe the Healthy Schools Act and restrict the use of our product around school sites as identified in this regulation. Please always read and follow all label instructions for target species of Norway and roof rats.