CHEMICAL-FREE - Sika PowerClean Aid is a closed cell spray foam cleaner that is chemical-free but strong enough to clean glass surfaces of residue and contaminants CLEANS GLASS SURFACES - Gentle enough to use to clean glass and other surfaces surfaces without scratching REMOVES CONTAMINATION - Sika PowerClean Aid is ideal for the auto glass replacement industry since it's safe for glass and ceramic frits to remove adhesive or silicone residue. EASY TO USE - Convenient Sika PowerClean Aid comes in a package of 24 pads; scrub gently and pay close attention to bond areas to clean and remove residue, then let dry DESIGNED FOR THE AUTO INDUSTRY - Ideal for auto detailing or windshield installation, Sika PowerClean Aid removes contaminants and leaves a clean glass surface for repair or installation