Answer: derats

AnswerCrossword Clue
DERATS

Emulates the Pied Piper

DERATS

Clears la the Pied Piper

DERATS

Clears of vermin

DERATS
Disinfests
DERATS
Purges, in a way
DERATSClears of vermin, as the Pied Piper
DERATSCleans up Hamelin, in a German legend