Arrow Pest Control is the best exterminator we've ever used. They are very informative and can explain exactly why you are having the problem you're having and will give you options on how you can help prevent it. In our case it was scorpions, and Steve was extremely helpful with suggestions on which plants to remove from around the house, where we could seal off parts of the house, etc. As a result, after 3 treatments we have no more scorpions.
They are also very child and pet friendly, and can tell you exactly what chemicals they are using and any side effects they may have. I won't use any other exterminators but Arrow.