Heavy duty scrub sponges effortlessly eliminate stubborn stains such as pan bottom scorch marks, stovetop grease, and sink grime, cutting down on cleaning time and effort. Note: Heavy duty scrub sponges are not suitable for non-stick pans with easily peeling coatings; rinse and air dry after use for extended lifespan. Double-sided composite carborundum sponge combines tough emery particles with a flexible sponge base, featuring a thickened structure to balance strong cleaning power and comfortable usability. Pot cleaner for bottom of pans boasts a balanced friction density design, effectively removing dirt without damaging the original surface of kitchen utensils. Small carborundum sponge is crafted from sponge and emery materials, ensuring durability and reliable performance through repeated use.