I had a huge scorpion problem a couple years ago. I researched and did all kinds of things to eliminate them. I finally decide to go medieval on their asses. Solution, release the cracken aka Gallus domesticus. That's right I made a chicken coup, got some chickens and at night I turned on floodlights in the yard which got all the creepy crawly's running around, then released the chickens from the coup. I can say the chickens scoured the yard like raptors eating everything that moved. The food source was severely depleted and the reduction in scorpions was dramatic. They ate the scorpions too, but the biggest impact had to be removing the food source. I also had farm fresh eggs for a while.