The Feng Shui principle of poison arrows is they are Shar Chi known as Killing Breath. The killing breath does just that, it destroys the chi in its path and is detrimental to the residents of the home. Feng Shui warns against Shar Chi or the killing breath. This brings misfortune and a great deal of bad luck, and are caused by the presence of secret Poison Arrows.
The shar chi from the poison arrows need to be blocked, diffused or removed.
Homes that are built on a t-junction or in the middle of a cul-de-sac
Corner of the house pointed towards your main door or window, also sharp edge of a bookshelf
Stump, stub or dry tree near your house
Old unnecessary cloths and things in your house, especially in bedroom
Satellite antennas, radiation towers, any poles in front of your house or window
Highway, bridge, overpass near your house
A straight pathway to your front door or long hall way with many doors along it.
A lot of trees before your main door, even only one big tree right in front of your main door