Related Clues:

• Attack baked-on grease, say
• Use a wire brush on
• Deep-clean
• Use a Brillo pad
• Abort a mission
• Call off, as a mission
• Use Comet on
• Cancel at NASA
• Wash vigorously
• Put some muscle into cleaning
• Area of dense stunted vegetation
• Exfoliating stuff
• Cancel a clean-up
• Stunted vegetation
• Scour the brushwood