FLEX TRACK Flex Track is a shock track system that can be used in multiple situations. The product can be used against birds, raccoons, and otters just to name a few. The shock track runs on a power supply that sends intermittent power surges throughout the track. If an animal is on the track, it will feel a shock and deter landing or usage of the area(s) being protected by the track. Birds get shocked by landing on the track. Raccoons can get shocked on their paws when trying to access a roof from a tree or fence. An otter can encounter a shock when it lifts itself out of the water and onto a dock. It is a humane method of eliminating access for animals, such as an electric fence works for livestock. It comes in grey, black or tan color to try to match the area it would be installed. It is best to have the application area cleaned off for the best installation.