Review on Variety of Colored Fiberglass Scratch Brushes by Lamar Hopkins

Lots of reviews recommend this wire contact cleaner. I do not recommend it. The brushes fell apart immediately when I started cleaning the metal wire contacts with them. Because this piece uses fiberglass, it becomes a giant mess. The fibers get everywhere, they get stuck in fingers and clothes, and I doubt if they get airborne they're comfortable to breathe. I couldn't even clean a contact before the brush fell apart completely. I would recommend a good contact cleaning spray or a small tube/wire brush.