Hi. Today I completed a one time service. I placed out 3 ant liquid baited trays in kitchen and treated the exterior perimeter with a liquid residual for ants. Treatment can take 2 or more weeks to control an existing ant population. We use non-repellent insect controls for ants, which will not prevent ants, therefore requires contact and will address the colony. Please try not to kill the ants, we need them to take our products back to their colony. Feel free to contact the office if you have any questions or concerns. Thank you for choosing Green Pest Solutions.