This stuff is magic. Buy the small 34;nail polish34; size with a brush, then refill from this. I use it on EVERYTHING. Before putting batteries in anything, I brush some on the battery spring and contact. No more jiggling flashlights. Ever. Those cheap aluminum LED flashlights that have sections that screw together - aluminum oxid (rust) is an insulator (read flashlight dies). Unscrew the new flashlight sections and apply a drop of this to each threaded section and reassemble. I use a little on USB cables. No more intermittent connections. Anything that's bare aluminum or bare copper us going to oxidize/corrode without thus stuff. I put it on bare twisted copper wire before using a wire nut - like on my landscape lighting. Without it, you might get an intermittent. You come back and the copper is black. There's no way to get a good connection, short of stripping back at least six inches of wire... Twist each wire, brush some 34;magic34; on. Twist them together and use the wire nut. You won't get an intermittent, and if you come back to re-wire anything, you'll find the wire uncorroded! Seriously. Any place metal and electricity collide, add some of this and everyone will be happier. Trust me. You will not be disappointed. It may seem expensive, but a little goes a long, long way. (I use it a LOT and the nail polish bottle lasts me at least a year, my refill bottle just ran out after maybe five years.)
Rating: [5 of 5 Stars!]