First MAKE SURE EVERYTHING THAT CAN BE SEALED ON THE OUTSIDE IS SEALED!! Next have a company like Truly Noleen come out and treat for crickets and other bugs that scorpions eat, if you eliminate their food source then there is even less reason for them to come into your home. Next look under the sinks at the pipes where they come through the wall, squirt expanding foam into those openings, do thin in the garage where the water pipes come into the house. Those vents that go to each room for A/C and heat, put some screening over then so if something gets into the duct work it can't get into one of the rooms.
If I come up with anything else I will post that up but that should keep you busy for a while.
If I come up with anything else I will post that up but that should keep you busy for a while.