Possible Clues:

• Insect: call it exasperating from the start
• Dangerous home invader
• 22 across, stratum ignoring one little bit
• Carpenters fear it, call it last thing needed in house
• The Magi, e.g
• Little home wrecker?
• Tweet 'I'm retaliating, partly over what might damage trees'
• Name I note for insect
• Call it English hill-dweller
• So-called ant: call it eastern