We have used Certified Pest Control for years to keep bugs and termites away from our house, and they have done a GREAT job. We just added Certified's mosquito control services, and we're very pleased. The technician arrived on time and clearly explained what he was going to do and then what he did. So far, no mosquitos! While he was at our house, I told him that we had found a roach upstairs in the past week. It's the first one I've seen in our house for years. He said that the quarterly pest control service should keep roaches away, unless we had left something open, and he asked if he could come inside to try to determine how the roach could have gotten inside. Sure enough, within minutes, he found that a chimney flue was open close to where we had found the roach. The technician closed the flue and solved the problem. We love how responsive Certified is to our needs, the expertise that they have, and the courtesy that all their personnel have shown to us.