Alan from Fountain Hills, Az writes
How long does it take to kill caterpillars?
The amount of time it takes for Malathion 57% to kill a caterpillar will vary based off several factors like the health of the caterpillar, how much of the product the caterpillar picked up on them, etc. It could be within the first hour, or it could be a day.
Answer last updated on: 05/08/2019