Related Clues:

• Small workers
• Picnic guests?
• Emmets, e.g.
• Little scurriers
• Aphid farmers
• Colonial group
• Formicary creatures
• They head for the hills
• Dance if they're in your pants
• Picnic hamperers
• Soil aerators
• Busy builders
• Echidna's snacks
• They may be in one's pants
• Silent army