Copper wool and copper mesh is a great solution for a large number of applications. Copper is a fairly soft type of metal. This makes copper wool excellent for polishing delicate surfaces. Copper wool is usually applied where steel wool still rubs too much.
Polishing chrome with copper wool
Copper is a fairly soft metal type. This makes copper wool excellent for polishing delicate surfaces such as chrome.
Copper wool prevents rodents from entering your home
The best and most permanent way to stop mice in your home is eliminating any openings through which mice and rats can enter. It's especially important you mouse-proof any areas where you store, process or use food. Also check electrical and plumbing entrances, doors, gutters, vents and chimneys for rodent access. Seal any opening that is larger than one-quarter inch (0.6 centimeters). Although mice can't get through them, it might be a good idea to seal holes that are smaller than this, as well. Mice are known for chewing their way through things, so before long that small hole might just be big enough for a mouse to get through.
Because of the way it's woven, copper wool is said to get stuck in rodents' teeth, making it difficult to move or chew through. This means you'll be able to skip the step of mixing the material with caulking compound before stuffing it into the holes.