Related Clues:

• Tiny pantry invaders
• They're sometimes seen in columns
• Tiny workers of the soil
• Hobby-farm workers
• Tiny marchers
• Six-footers that even short people tower over?
• They evolved from wasp-like ancestors
• Workers require pressure to cover their legs
• Six-legged marchers
• Echidna food
• Barbecue invaders
• Antenna users
• They march in lines
• Moving line on the ground, maybe
• Pantry crawlers