Rodent tape is a deterrent for critters that like to chew vehicle wiring. Wrap any trouble spots to prevent any future wire harness issues. The tape is treated with capsaicin (active component in chili peppers). When wrapping the harness it is recommended to use the half-wrapping method. Each time you wrap the tape around the harness overlap the previous layer by half the width of the tape. One roll = ~65 feet of tape.