The reason why the weed killer RoundUp has been on store shelves for over 40 years is because RoundUp kills weeds at the root. That means that when RoundUp is sprayed on the weed, the herbicide seeps into the weed and destroys the weed from the inside. That explains why RoundUp causes cancer in people that use RoundUp. The RoundUp seeps into the body and destroys the inside of the consumer. Basically, if you buy RoundUp, then you are committing gradual suicide.