We have had their service since the past 5 years and have been very happy with it. Living in AZ, we do expect to see scorpions every now and then in the summer, but the regular monthly service has helped to reduce the sightings considerably. We have had incidents where we found a scorpion a week after they had sprayed and AZ Best would come out again at no charge and respray. Their prices are very reasonable and they are always punctual and courteous.