Yes this company (Responsible Pest Control) will kill scorpions!!! And other bugs of course. I recently used them for my house because I found a scorpion in a ceiling light.
The technician David came and sprayed my entire inside and outside of my house. He also sprayed my outer wall separating my house from my neighbors. He said this is very important because all bugs (and especially scorpions) will die and other neighboring bugs/scorpions will not come onto my property from this.
The video they post on their website (under the scorpion tab) really sealed the deal for me to call them. This video shows the system and chemical that they use will kill scorpions when all other exterminator companies say they cannot be killed (only their food supply i.e. other bugs can be killed). Also they told me that this chemical will not harm dogs - it just needs to dry before dogs can be around it.
I initially had set up a one time appointment. But soon learned that it is cheaper and more effective if they come on a monthly schedule. It is a lot cheaper actually. And any future issues will be prevented making this a proactive way to deal with scorpions and other bugs.
I would highly recommend this company for scorpions and also any other bugs you might have in or around your house.