Weed Murderizer Pueblo?

I use Speed Zone mixed with citric acid and Urea.

Kills em dead fast.

https://youtu.be/hYC6O7WJW9w?si=qgdgu_kkUMUpNlkZ

What you want is known as a ground sterilizer.
This stuff rocks and is available to consumers without restrictions
https://www.keystonepestsolutions.co...6&restricted=y

I use a mix of ground clear and 2-4d concentrates and a few drops of dish soap and water in my sprayer and it takes care of 99% of weeds.