BullFrog Electronic Cleaner & Corrosion Blocker. New High-Performance VpCI Technology, removes corrosion and grime that can cause distortion or loss of signal. Improves reliability by sealing bare metal surfaces against air and moisture. Cleans and protects: Audio, Video Computer & Electronic Cables, Connectors, Battery Terminals, Satellite Dish Connections, Relays & Sensors and more. Cleans and protects electronics, blocks corrosion and rust Computers and other electronics, machines and toys For audio, video, computer & electronic cables, connectors For security systems, generators, switch and circuit breaker panels, exposed wiring, motors, tools For battery terminals, satellite dish connections, relays and sensors