I have a large eucalyptus tree in my front yard.
Lately it's been looking quite sick and dropping a lot of branches. After a branch fell on a neighbour's car, I asked an arborist to take a look at it. He said it diseased and recommended it be removed immediately as it posed a danger to my house (it's a few meters away from the main bedroom window).
I put in an application to council to remove it (along with his report) but it was rejected. They didn't agree that the tree posed a danger to the property.
Long story short, I'm going to kill it.
How can I kill it discretely? I've heard lots of methods (diesel on the roots, girdling, hot water and salt, drilling a hole and filling it with roundup, copper nails etc) but it needs to be something undetectable.
Anyone have any ideas?