Answer: nigglers

AnswerCrossword Clue
NIGGLERSPickers of nits
nigglersNIGGLER, one that niggles (to worry over petty details)
nigglersto criticize, esp. constantly or repeatedly, in a peevish or petty way; carp
nigglersto work ineffectively; trifle
nigglersto spend too much time and effort on inconsequential details