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