I think it's cyanide.
Arsenic.
arsenic
arsenic
Arsenic is used in rat poison and is in the title "Arsenic and Old Lace."
carbon is used in rat poison and is the title of a murder mystery
Arsenic (and Old Lace).
"Arsenic"
Arsenic is used in rat poison and is in the title "Arsenic and Old Lace."
Historically, arsenic was used on rats. Some insecticides used thallium, a heavy metal.
Arsenic is a common rat poison often found in mystery titles. Arsenic and Old Lace
Arsenic (rat poison) is one because it leaves little trace that the murder victim has not succumbed to a natural death, but there are other. Agatha Christie became an expert on poisons while researching her mystery novels.
The 12 most commonly used Interjections:yesohyeahnoheyhihellohmmahwowouchhurray