hey /out/,

I work as a laborer for a construction company. I have to cut weeds and such. And the worst thing that I have to cut is this shit. We call them water weeds. the only thing we can use is a weedtrimmer. And it's strenuous work, considering how much there is on and around the warehouse property. We've tried basic weedkiller sprays and other expensive ones. Is there any homemade remedy to kill them other than cutting them or pulling them?

tl;dr: stupid fucking weeds, impervious to weedkillers.