Related Clues:

• Hoover Dam finally seen on holiday university repeated
• Cleaner air can't be found here
• There's a natural abhorrence for such a cleaner
• Clean area providing free space
• There�s absolutely nothing in it
• Domestic equipment that's naturally abhorred?
• Space dust?
• Cleaner visits top college and university in the morning
• Account to use when talking through 'very little money'? There's nothing in it!
• Space devoid of matter
• There's nothing in it for cleaner
• Sucky appliance
• Nothing is cleaner!
• Clean up dust and pet hair, maybe
• The cleaner uses suction