I was once known as the "Scorpion Queen" after killing over 90 scorpions in my Warner Ranch home in Tempe over about 6 months. I had the home sealed at a cost of about $700 which cut down the scorpion sitings inside my home to about 1 a month. Unfortunately, scorpions are very territorial and especially love preserve lots and golf lots or homes that are built on old orchard sites. I used Arizona Exterminating for the sealing and also posted an article scorpions on my blog at the link below. Good luck!