Complex sentence: Some cleaning agents can kill bacteria, e.g. on door handles, worktops and other metallic surfaces, and clean at the solvent-containing and are then called degreasers.
Split into simpler sentences: Some cleaning agents can kill bacteria, e.g. on door handles, worktops and other metallic surfaces, and clean at the same time. Cleaning agents may also be solvent-based or solvent-containing and are then called degreasers.