What’s a good weed killer?

If you want to get rid of your weed, just give it to Kowalski.

Bleach

Cat urine

If you use it properly Round-Up is extremely effective and safe to use. Wear gloves. Don't use it facing upwind.

Legalize it and then have the government tax it and sell it.

https://www.bhg.com/gardening/pests/insects-diseases-weeds/vinegar-as-weed-killer/

Round Up is the best for killing everything, they use it on almost all the food you consume. If you can buy the concentrated stuff, mix 3% vol with water. 1 jug lasts years.

For lawn care use any broad leaf herbicide.

I AM A MASTER WEED KILLER.😎