Head lice, nits, kutus whatever you like to call them, most of us have had an encounter with them.
Many of us have had the unenviable task of having to check for nits and then apply treatment.
Who would've thought something so tiny would cause hundreds of years of hassles.
It's a job not many would want to do, but for two Taumarunui solo mums, it's got them off the benefit and back into the work force. "Nit Busters" is a programme that's killing two birds with one stone, tackling unemployment and the age-old headache for parents - killing nits.
As Ruwani Perera found out, it’s changing lives.