Not bad for wiping down a bike, and you can get them cheap at the market, local one has them 2 tubs for $4 or something.
I can't believe how gunky a bike can get, some kind of fine, black, junk all over the thing. Like a fine fine powder. Car-tire residue?
Wiping down a bike this way is clean, can do it indoors like I just did, and you get to look closely at parts on the bike, if there are loose spokes or a wonky something, you'll catch it.