Related Clues:

• Biting flies
• Swarms of them are called clouds
• Irritants in a cloud
• Little biters
• Black cloud formers
• Tiny fliers
• Pests that form black clouds
• A horde of ____
• Barbecue annoyances
• Annoying buzzers
• No-see-ums
• Pesky flying insects
• Mushroom pests
• Campers' annoyances
• Annoying swarm