How to kill Elephant grass?

Cut it all about 2 cm above the ground, give a little more clearance if the grond is wet, use an applicator bottle to paint on glyphosate concentrate at 360ml/1L-which is a good concentration of roundup ie that's how it comes at least in Australia. or If it is small you can use a sprayer and use 100-200ml per 10L of concentrate to spray the foliage. avoid spraying in moist areas this stuff is very bad for animals. How would you like to swim in the stuff? or you could use a matic to matic it out of the ground.