Crossword Clue:

Clear of vermin a la the Pied Piper

AnswerCrossword Clue
DERATClear of vermin a la the Pied Piper
DERATClear a la the Pied Piper
DERATSClears of vermin, as the Pied Piper
DERATSClears la the Pied Piper
DERATRid of vermin, Pied Piper-style