The word you are looking for is herbicide.
I do. I actually don't like to take pain killers without smoking weed.
Yes
no.
roundup
* Reduce the use of Weed killers ,if it is too compulsary use only weed killers which do not harm the land
Dioxin
all weed killers are is salt and water making it safe to drink.
Herbicide
In the US, "weed killers" is a colloquialism for a class of pesticides called herbicides. Glyphosate (Roundup is one brand) and glufosinate (Liberty is one brand) are a couple of common examples.
Organic foods are produced without manufactured fertilizers. pesticides or weed killers only if they are considered natural.
Weed or marijuana has a more Depressant rather than pain killers witch have artificial drugs manufactured and Marijuana has actually a less likely chance to get addicted on them.
Chemical herbicides are weed killers made in the laboratory, not from nature.