C9 Twenty Minutes

Low level of Strychnine?

Katherine shunning Aaron's question takes out her phone. If her knowledge is correct, Strychnine is a highly toxic, colorless, bitter, crystalline alkaloid used as a pesticide.

And Google said the same.

If the killer's motive was to kill Aaron, why would he use a low level of Strychnine?

When he can use a high level of Strychnine, damaging his respiratory system