Docks, Please Help! Weed Killer?

My garden is becoming overrun with Docks.
They are growing at an alarming rate, and I can not keep on top of them by hand. The root is almost impossible to remove.
I'm really looking for a decent weed killer to just kill them off once and for good and start fresh...
What's good, and will work properly?


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I'd use glyphosate, (Round up), but it takes a week or two to show its working, and you need to leave as much foliage as possible.

 

I've left all the foliage, as from what I gather you need it to absorb the weed killer. I bought a Glyphosate based one today, but it was Resolva Xtra Tough, as it was a fair bit cheaper than Round Up.
Hope it works!
I'm not bothered about it killing off other stuff. I want a fresh start now. The garden is past it. :(


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Hello, U need doxstar, its expensive stuff but well worth it, if u know any local farmers they may well give you some, roundup will kill grass too but doxstar will only kill docks