When you’re working in Lightroom, the eraser brush is a great way to erase areas of your image. You can use it to erase any part of an image, or to erase all the pixels in an area. To use the eraser brush, first make sure that you have Lightroom set up so that it can recognize the eraser brush. Then, press the left mouse button and drag the cursor over the area you want to erase. The eraser will start erased automatically, and will continue to erase pixels as you move the cursor around. If you want to stop the erasing process right away, just release the mouse button and let Lightroom continue deleting pixels automatically.