Related Clues:

• They may lead to hives
• Cockroaches and cicadas, e.g.
• Warning devices
• Some are killer
• Causes concern
• Workers in gardens
• Food for moles
• Stinging insects
• Security devices
• Hive residents
• Fire and burglar, e.g.
• Busy types
• Buzzing swarm
• They serve a queen
• Pollen spreaders