Related Clues:

• Bells and whistles, say
• Producers of some storage cells
• Despicable ones
• Social workers?
• Many are drones
• Bees/fleas
• They might arouse you
• Smoke detectors, e.g.
• Bells and whistles?
• Entomology subjects
• Events for spellers
• Morning warnings
• Most animals
• Sleep disturbers
• Hummers at home in hives