Injection apparatus for injecting pesticide and method of injecting pesticide in soil adjacent structures

In a method and apparatus for treating soil adjacent a structure, an injection apparatus (10) is positioned adjacent a structure so that at least one high pressure nozzle (38) and at least one low pressure nozzle (66) of the injection apparatus are adjacent to the soil. A pesticide solution is delivered to the at least one high pressure nozzle and the at least one low pressure nozzle. The pesticide solution is injected into the soil by permitting the pesticide solution to flow through the at least one high pressure nozzle and into the soil without prior disturbance of the soil. The pesticide solution is applied on the soil by permitting the pesticide solution to flow through the at least one low pressure nozzle and onto the soil.