Related Clues:

• Exterminator's targets, sometimes
• Rat relatives
• "Nuts!"
• Wharf denizens
• Drat!
• Gives up, with ''out''
• ''Ben'' extras
• They might squeak by
• Maze runners
• They rest on pads
• "Darn"
• Quiet types
• ''Doggone it!''
• Lab maze runners
• House pests