The following radon mitigation experts use the Radon Sniffer:

Arizona

Delaware

Florida

Florida

Georgia

Georgia

Georgia

Illinois

Illinois

Indiana

Iowa

Iowa

Kansas

Minnesota

New Hampshire

North Carolina

North Carolina

North Carolina

North Carolina

North Carolina

North Carolina

Oregon

Oregon

South Carolina

Tennessee

Tennessee

Utah

Virginia

Virginia

Virginia

Wisconsin

Alberta, Canada

British Columbia, Canada

British Columbia, Canada

Manitoba, Canada

New Brunswick, Canada

Ontario, Canada

Ontario, Canada

Québec, Canada

Austria

Finland

Germany

Germany

Italy

Liechtenstein

Spain

Switzerland