Do you use acacia as termites killer?

NO. Termites are a structural problem, and can cause severe structural damage. This is why some mortgage companies require aWIR, (Wood infestation report) on home sales. They are always required on VA loans. This means a licensed exterminator has to inspect and either pass or fail the home on Wood destroying organisms.That can include termites, dry rot, fungus, carpenter ants, and some states such as CA are very strict about this law.