Don't throw away an old toothbrush, keep it to clean small spaces in your home.

You can use an old toothbrush to clean things like:<br>- Between your keyboard keys<br>- Window seals<br>- Around taps<br>- In between the cracks in your car's dashboard and seats<br>- Other tight spaces you can't easily reach with a regular cleaning brush.<br>Use it with soap and warm water to wash away dirt, dust, and other impurities, and let it air dry to prevent bacteria from growing on it.<br><br>This also helps the environment by reducing the need to purchase cleaning brushes that you'll eventually throw away.<br><br>Rinse it with warm soapy water every couple of weeks and let it air dry.<br><br>Edit: I changed "lather" to "wash away" because I got a lot of comments asking what "lather" means.