Contact us

communication icons

Corporate Office

3041 W. Pasadena Dr.
Boise, ID 83705
208.955.8930

Customer Service

Veterinarians and Cattle Producers

800.824.3703
6 a.m.- 6 p.m. MST Monday-Friday
8 a.m.- 2 p.m. MST Saturday

Swine Producers

800.247.5077 (Mankato, MN)
877.996.2635 (Sioux City, IA)
800.643.3064 (Springdale, AR)
7 a.m.- 5 p.m. EST Monday-Friday

Ag Retailers

888.322.6035
9 a.m.- 6 p.m. EST Monday-Friday

E-commerce Support

888.562.3405
9 a.m.- 8 p.m. EST Monday-Friday
EcommerceSupport@mwiah.com
To enable desktop support, click to download TeamViewer Remote PC access

Returns/Customer care

866.274.6213
9 a.m.– 8 p.m. EST Monday–Friday
returnsauthorization@mwiah.com