Summary report of states that prohibit the use of CO (carbon monoxide) gas chambers to perform euthanasia on companion animals:

Prohibited by statute:

Arizona

California

Delaware

Florida

Maine

Maryland

New Jersey

Oregon

Tennessee

Other States

Alabama

            not prohibited by statute

Alaska

            not prohibited by statute

Arkansas

per Dr. Charles Gans of the Arkansas State Vet’s office (12/8/04), not prohibited by statute, but CO not used anywhere in the state

Colorado

per Dr. Rohr of the Colorado State Vet’s office (12/8/04), not prohibited by statute, but CO not used anywhere in the state

Connecticut

per Dr. Sherman of the Connecticut State Vet’s office (12/8/04) not prohibited by statute and is not used; follows AVMA guidelines

Georgia

per Mary Grain of the Georgia Animal Protection Unit of the State Vet’s office (12/8/04), CO chambers that were approved for use prior to 1990 are still in use; statutes only prohibit new gas chambers

Hawaii

            per Hawaii Humane Society (12/8/04) not prohibited by statute, but is not used

Idaho

per Dr. Eyre of the Idaho State Vet’s office (12/8/04) not prohibited by statute, but is not used

Illinois

            not prohibited by any statutes or regulations

Indiana

            not prohibited by any statute

Iowa

            not prohibited by statute

Kansas

            not prohibited by statute; follows AVMA guidelines

Kentucky

though CO not prohibited by statute, EBI is mandated for all certified animal control agencies

Louisiana

            not prohibited by statute; follows AVMA guidelines

Massachusetts

            not prohibited by statute, however, has strict guidelines for use

Michigan

            not prohibited by statute

Minnesota

            not prohibited by statute

Mississippi

            not prohibited by statute

Missouri

            not prohibited by statute; follows AVMA guidelines

Montana

            not prohibited by statute

Nebraska

            not prohibited by statute; still in limited use

Nevada

            not prohibited by statute

New Hampshire

            not prohibited by statute

New Mexico

            not prohibited by statute

New York

            not prohibited by statute

North Carolina

            not prohibited by statute

North Dakota

            not prohibited by statute

Ohio

            not prohibited by statute

Oklahoma

            not prohibited by statute

Pennsylvania

            not prohibited by statute

Rhode Island

            not prohibited by statute

South Carolina

            not prohibited by statute

South Dakota

            not prohibited by statute

Texas

            prohibits only the use of uncooled or unfiltered CO

Utah

            not prohibited by statute

Vermont

            not prohibited by statute

Virginia

            not prohibited by statute

Washington

            not prohibited by statute

West Virginia

            not prohibited by statute; follows AVMA guidelines

Wisconsin

            not prohibited by statute

Wyoming

            prohibits only the use of CO chambers that utilize a gasoline engine