Investigators said the search warrants served Wednesday are the culmination of an eight-month-long investigation launched by a tip.
When it was all over, the Spice officers seized had a total estimated street value of over $1.5 million.
Rachel Wright and Jeremy Wright were arrested Wednesday on Spice distribution charges and for operating a business without a license.
Rebecca Beckman and Terry Beckman are also facing felony distribution charges, as is Jordan Hansen.
The raided smoke shops, investigators said, were distributing Spice made by a St. George resident.