Agents around the country seized $6 million worth of synthetic marijuana and other synthetic drugs, marketed as herbal incense and bath salts.
Eight businesses and two homes were raided in Kern County and there were also raids in the Fresno area.
The synthetic drugs are being marketed as legal.
Bath salts is a street name for designer drugs that often resemble Epsom salts.
Synthetic marijuana or herbal incense, is a natural herb sprayed with synthetic chemicals to mimic the effects of cannabis.