"Thomas Fairweather" wrote in message
...
. . . . . The only way is several applications of
glyphosate.

But you need to bruise the surface of the tails during application - a
rubber glove under an old woollen one wetted with glyphosate. Stroke
each tail a couple of times and that should do the job but keep at it!
Some dynosaurs ate the stuff and it's still here!!

Geoff