Exactly how long a toothbrush lasts vary from person to person. When it comes time to replace your toothbrush with a new one, don't discard the old one. Use the retired toothbrush as a cleaning brush. We use old toothbrushes to help clean the grooves of our wainescoting of our kitchen island. We also use them for cleaning along the baseboards.
The toothbrush can be used to clean just about anything that a larger scrub brush cannot.
