Irritating ones (5)
I believe the answer is:
pests
(Other definitions for pests that I've seen before include "Persistently annoying persons" , "Take steps to troublesome animal." , "Steps taken about nuisances" , "Steps (anag.)" .)
I believe the answer is:
pests
(Other definitions for pests that I've seen before include "Persistently annoying persons" , "Take steps to troublesome animal." , "Steps taken about nuisances" , "Steps (anag.)" .)