The Short Answer
For daily cleaning: warm water and a small amount of dish soap on a microfiber cloth. Wipe and rinse thoroughly — soap residue left on quartz dulls the surface over time. For sticky spills: let them soften by dampening with warm water, then wipe. For dried food: a plastic scraper can remove it without scratching. For stubborn stains: a small amount of rubbing alcohol on a cloth can dissolve staining compounds. Dry after cleaning — standing water at the seams can affect the adhesive over time.