Answer:

poisons

Answer	Crossword Clue
POISONS	Pesticides, to pests
POISONS	Exterminator's supply
POISONS	Cyanide and arsenic, e.g.

POISONS	Cyanide and hemlock
POISONS	Cyanide and arsenic
POISONS	Corrupts
POISONS	Toxicologist's concerns
POISONS	Contaminates
POISONS	Whodunit elements
POISONS	Toxins
POISONS	Corrupts.

POISONS	Arsenic and strychnine
POISONS	Does in, in a way
POISONS	Baneful stuff
POISONS	Toxicologist's specialty
POISONS	Bottles marked with a skull and crossbones