Scorpion control is very hard in Arizona, so leave the work up to Mojo to get rid of the problem.
Scorpions control is not easy. They can tolerate a high dose of treatment and still be fine. It is important to layer the defense for scorpions. Treating the cinder block fence is the first place to start. Often scorpions nest in the crack of the fence. Next is to use a high end chemical around the foundation of the house and garage.
A great way to help eliminate scorpions is to make sure there are no trees or shrubs touching the house. Limbs that are touching the house can create a way for scorpions and other bugs to bypass the chemicals around the house.