Possible Clues:

• 'Daily Chronicle', initially thinner
• Carbon leads to more efficient detergent
• Daily in circulation, originally thinner
• Daily runs -- after seeing list in church
• Not as dirty
• Daily customer to begin with, one with a list?
• Initially, carpet fitter looking for a charlady?
• Charlie having successfully dieted daily?
• Daily rag
• Mop, for example, without its head is more efficient