Cleaning excess mortar from bricks is important for maintaining the appearance and structural integrity of the brickwork. Here are some effective methods for removing excess mortar:

1. **Scraping**: Use a stiff-bristled brush or a metal scraper to remove excess mortar from the surface of the bricks. Work in small sections, applying firm pressure to loosen and scrape away the mortar without damaging the bricks.

2. **Wire brush**: A wire brush can be effective for removing dried or stubborn mortar residue from the surface of the bricks. Use short, firm strokes to scrub away the mortar, working in the direction of the brick joints.

3. **Water and sponge**: Wet the surface of the bricks with water and use a damp sponge to gently scrub away excess mortar. Avoid using too much water, as this can cause the mortar to become too wet and difficult to remove.

4. **Muriatic acid solution**: For particularly stubborn mortar stains, you can use a diluted solution of muriatic acid (hydrochloric acid) to dissolve the mortar residue. Mix one part acid with ten parts water and apply it to the bricks with a brush or sponge. Be sure to wear protective gloves and goggles when handling muriatic acid, and follow the manufacturer's instructions carefully.

5. **Commercial cleaners**: There are also various commercial brick cleaners available that are specifically formulated to remove mortar stains and other types of dirt and grime from bricks. Follow the manufacturer's instructions for application and use caution to avoid damaging the bricks or surrounding surfaces.

6. **Pressure washing**: In some cases, pressure washing can be effective for removing excess mortar from bricks, especially if the mortar is still wet or relatively fresh. Use a pressure washer with a wide-angle nozzle and low pressure to avoid damaging the bricks.

Regardless of the method you choose, it's important to take care when cleaning excess mortar from bricks to avoid damaging the bricks or the surrounding surfaces. Test any cleaning method on a small, inconspicuous area first to ensure compatibility and effectiveness.