Possible Clues:

• Make economies? That's no good!
• Waste of time, what you may do to protect the environment?
• Red herring with head removed from Takeaway is no good
• Futile to save more?
• Impractical advice for someone trying to economise
• Ineffective female missing state of dangerous plug?
• Pointless to exploit fewer
• Of no value to Britten leaving business letter
• Economise? It's serving no purpose
• Of no help to Sue Cook from Takeaway