[Soundguy]

I agree with egon.. it will , in the end, be easier to just amend the soil with *something* to make it inhospitable to plant growth.

I bet a bag of CACL mix and a plastic scoop would work wonders.. be cheap too.. sprinkle some on every green spot, and then POOF! plant dies... won't grow back in that spot unless you dig the salted dirt up and replace with fresh..

soundguy