Aversion Technologies, Inc.

Protecting People, Pets and Plants


repela™ for rodents

Repela™ for Rodents masterbatch combines powerful aversives for deterring animals from chewing compounded materials, such as electric and fiber optic cables, plastic pipes, foam insulation, and many other materials.

The initial work that lead to the creation of Repela for Rodents was done by the USDA and released in whitepapers in 1999 and 2000. You can read these white papers on our News page, along with other articles about rodent damage.

Aversion Technologies took these great ideas and created manageable products for incorporation into polymers. The USDA worked with two powders that are extremely aversive - denatonium compounds and capsaicinoids. Both of these materials can be difficult to handle, but Aversion Technologies' Repela minimizes those handling issues by putting the powders into an EVA carrier that is widely compatible with customer requirements.

How It Works
What the research has proven is that animals chew on plastic materials because they look good, smell good and taste good. Repela alters that attractiveness in the following four ways:

  • First, when the animal bites into the plastic, they will experience an extremely foul-tasting material.
  • Second, this foul-taste experience is combined with a extraordinarily pungency that causes severe distress to the mucosa of the animal, making the mouth, nose and eyes burn.
  • Third, Repela has a distinct odor that animals will now associate with the bad experience. This leads to behavior modification and animals avoid these products in the future.
  • Fourth, the fear response and unpleasant reaction is also communicated to other animals in the vicinity.

Typical Applications

  • Wire and cables
  • Tubes and pipes
  • Electrical boxes
  • Wiring harnesses
  • Food and feed bags
  • Trash bags

Application Notes

Usage Information
Typically, Repela for Rodents is typically added at rates of 3-5%, depending on the application. Experimentation to optimize usage is the only true guide for your specific application.

Environmental Concerns
Aversion Technologies is guided by the principle of doing no harm to people, plants, or animals and no damage to the environment. Our approach is to not injure the animal or add hazardous chemicals to the environment. Using Repela meets these goals. Repela does not harm animals. Furthermore, Repela is captured in plastics and does not leach into the environment. The chemicals used, both natural and synthetic, break down quickly in the environment, usually in less than three weeks.