When cleaning quartz countertops, it's important to use tools and materials that won't scratch or damage the surface. Here are some recommended options: 

1. Soft Cloths or Sponges: These are ideal for daily cleaning. They are gentle on the surface and can be used with a mild cleaner and warm water.

2. Non-abrasive Scrub Pads: For tougher stains, a non-abrasive scrub pad or a soft nylon brush can be used. Avoid anything with steel wire or hard material，as these can scratch the quartz. 

3. Microfiber Cloths: These are excellent for drying the surface after cleaning, as they help prevent water spots and are also effective for buffing out minor smudges. 

4. Ph-Neutral Cleanser: Use a cleanser that is specifically designed for stone care. These products are formulated to clean effectively without damaging the surface. 

5. White Vinegar: For some tough stains, a solution of equal parts white vinegar and water can be used. Vinegar is a natural disinfectant and deodorizer. 

6. Baking Soda: For a non-abrasive scrub, a paste made from baking soda and water can be effective on certain types of stains. 

7. Rubbing Alcohol: A small amount of rubbing alcohol can be used to remove stubborn stains, but always test on an inconspicuous spot first. 

8. Soft-Bristled Brush: For cleaning in the sink or around fixtures, a brush with soft bristles is recommended. 

9. Mild Dish Soap: For general cleaning, a few drops of mild dish soap in warm water can be used. 

10. Paper Towels or Coffee Filters: These can be used for drying the surface to prevent water spots after cleaning. 

Remember, the key to maintaining the beauty and integrity of your quartz countertop is to use gentle cleaning methods and to address spills and stains as soon as they occur. Always avoid using abrasive materials or harsh chemicals that can etch or discolor the surface.