#0000 Steel Wool

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Steel wool is a bundle of fine steel filaments that can be used to clean, sand or polish certain materials. They come in different grades like sandpaper which determines it's coarseness. We only use the most fine, #0000 steel wool on windows. 

Steel wool works better than anything else at polishing and removing grime from windows. We use it on every single window on a first time window clean. 

We can use steel wool while the glass is wet or dry, as long as its clean. We usually give the glass a scrub with it after applying our glass cleaning solution and follow up with any missed spots with a dry piece of steel wool.