How long do the polymer rollers last?
Again, this is very dependent on the application. Used 24/7, the cleaning ability of the roller will diminish more quickly than one used occasionally, though all rollers will retain a level of cleaning performance, no matter how old. Compare the roller to the tires on a car, new ones will hold the road better, and high-mileage drivers will change them regularly. Older tires do not have the same performance, but will still get the driver from A to B.
