Mouse Blocker Anti-Rodent Insulated Repair Tape or Rodent Tape - The Deterrent The Pros use. MouseBlocker Anti-Rodent Insulated Repair Tape is made with encapsulated Capsaicin from Hot Chile Peppers. This repair tape is a great addition to the already potent rodent protection our Original 12V MouseBlocker provides however it protects in a little different way by putting a barrier between the rodents teeth and the sensitive vehicle wiring. Use the MouseBlocker Insulated Repair Tape to protect your wiring after making a repair or protect the entire harness.