Related Rule
Kenya
Practice Relating to Rule 17. Choice of Means and Methods of Warfare
Kenya’s LOAC Manual (1997) states: “In the choice of weapons or methods of combat, care must be taken to avoid incidental loss or damage to civilians or civilian objects.” 
Kenya, Law of Armed Conflict, Military Basic Course (ORS), 4 Précis, The School of Military Police, 1997, Précis No. 4, p. 1.
The manual specifies that:
The direction and the moment of the attack shall be chosen so as to limit civilian casualties and damage (e.g. attack of factory after normal working hours).
The precautions to be taken in targeting for particular weapons and fire units are equivalent to those to be respected in the choice of a military objective. The tactical result expected (e.g. destruction, neutralization) and the destructive power of the ammunition used (quantity, ballistic data, precision, point or area covered, possible effects on the environment) should especially be taken into account. 
Kenya, Law of Armed Conflict, Military Basic Course (ORS), 4 Précis, The School of Military Police, 1997, Précis No. 4, p. 8.