Related Clues:

• Sludgy stuff
• Mucky stuff
• 'Ick!' evoker
• Exudation, maybe
• Oozy gunk
• Slimy stuff
• Slimy gunk
• Hair gel, e.g.
• Viscous substance
• Loss due to leaks
• Damp basement cause
• Slow leak
• Crib comment
• Honey, e.g.
• Yucky substance