Any brush will need to be replaced after enough uses, as Mr. Kidknow said. I like the Disc Doctor brushes, which come with replaceable pads. The handles will last forever.
As Hammy suggested, brushing and wet cleaning without vacuuming is largely a waste of time. If you don't quickly vacuum off the scummy solution before the liquid evaporates, all the junk goes right back where it started; but now it's been broken down into smaller particles and pasted deeper into the grooves.
As Hammy suggested, brushing and wet cleaning without vacuuming is largely a waste of time. If you don't quickly vacuum off the scummy solution before the liquid evaporates, all the junk goes right back where it started; but now it's been broken down into smaller particles and pasted deeper into the grooves.