I'm mixing my own brew of 73% glysophate at 1.5 Oz and 53% imazapyr at 0.5 Oz per gallon.
That recipe will cure your unwanted vegetation problems.
73% gly available to us unlicensed folks?
In a granular form, yes. It's called Roundup Quick Pro.
It's water soluble and you can buy it in 7lb jugs or 1.5 Oz packets. Tractor supply usually carries the packets.