4 Answers

Drill holes about 12 mm diameter pointing downwards and pour in glyphosate. Buy glypho now as it might be banned soon.

Copper nails 

Velpar. This is what the self-absorbed ass**** used to kill our 150 year old Treaty Oak here in Texas. All because she broke his worthless heart.....

Info here :http://www.forestry-suppliers.com/product_pages/Products.asp?mi=19081

This sort of configuration naturally lends itself to any number of combinations of two different types of time. George Daniels used it to great link effect in his Space Traveller watches and Daniels in turn owed a debt to Breguet whom he admired for the latter's link ability to create complicated watches which despite their mechanical complexity and link the amount of information conveyed still managed to achieve a very rare kind of elegance as well.