We have been using A-1 for a couple of years now and they are great! They do a quarterly extermination of the interior and exterior of our house and we also have them do the tick and mosquito spraying from the spring through the fall. The spraying last summer noticeably decreased the mosquitoes we had and we could actually sit outside on our deck in the evening without getting bit which was great! If we have an issue, they are extremely responsive and come out immediately. I would highly recommend!!!