Free: Contests & Raffles.
Ive used wipe out and montana extreme 50bmg solvents. They both work well but the 50bmg is just plain obnoxious. Bottle says "caution, strong vapors", i expected it to be a normal hoppes type smell, i took a whiff and felt like i got punched in the nose! Definitely something to only use outside, even then, i can smell ammonia for days afterward.
I'll be trying out some Wipeout "Patchout" today. Heard good things about it. Apparently, no brush required. I've used quite a few of the other copper removers, but never Wipeout. I picked up a bottle at Sportsmans Warehouse last time I was in Federal Way, a couple weeks ago. Tried Cabelas in Lacey first but they don't have it, or at least I didn't see any in the store. Seems odd that they wouldn't stock it, as it seems to be pretty popular.