Related Clues:

• Surface residue
• Fruit of the oak
• Bathtub woe
• Pond film
• Ugly film
• Bathtub dirt
• Icky residue
• Fungal discoloration
• Humidity problem
• Surface matter
• Pond problem
• Soap ___ (shower buildup)
• Shower scourge
• Bathtub residue
• Dirty film