When one chapter ends, another is always waiting to be told. Tyler and Mackenzie Myers are proof of that. Tyler and Mackenzie took ownership of a feedstore and BioZyme® dealership on January 2, 2026, T&M Ag Supply (formerly D&M Ag Supply) in Rapid City, South Dakota. Their story as BioZyme dealers is just beginning.
Both Tyler and Mackenzie have experience in the livestock feed industry. However, nearly three years ago, Tyler went to work for D&M Ag Supply and discovered the joy of a smaller feedstore.
“I get to take care of people here, not chase dollars, like we did in corporate sales,” he said. “I get to call our customers by their names while working at the store. I know their kids’ names and their pets’ names and what they need for their operations.”
When former D&M owners were ready to make a change, they knew that Tyler and Mackenzie had the ambition and ideas that aligned with their own to keep the 50-plus-year family business thriving.
Why BioZyme?
Although D&M had a long history in agricultural sales, they had only been BioZyme dealers for a few short years. However, that was one product line the Myers duo knew had a place in their Western South Dakota storefront. Tyler knew VitaFerm® as a high-level competitor to the brand he had previously sold, and he had researched VitaFerm and BioZyme.
“I wanted to work with BioZyme any way I could. No one was offering its products in Rapid City, and it is a great fit for our area,” he said. “I appreciate the care and thought process that goes into the products. We know that healthy animals produce more efficiently, and more efficient animals produce more wealth for the producer. We love seeing our customers succeed!”
Today, T&M sells all product lines: VitaFerm, DuraFerm®, Vitalize®, Gain Smart®, Backyard Boost®, and Sure Champ®. They are a BioZyme Master Dealer and recognize the importance of stocking all brands to meet customers’ needs.
“Everybody has a different story, but it doesn’t matter if they buy VitaFerm, Vitalize, DuraFerm, or Backyard Boost; all the customers are happy with their products, and they all talk about the success that they have had.”
Looking Back & Going Forward
Tyler and Mackenzie are not native to Rapid City or even South Dakota. Tyler is from Ohio; Mackenzie is from Minnesota. They met at South Dakota State University, where they both earned bachelor’s degrees; he in Ag Science, she in Animal Science. They fell in love with each other and the Black Hills of South Dakota.
Today, in addition to T&M Ag Supply, they own a house and some acreage that allows them to run a flock of sheep and about 40 chickens. This further allows them to use BioZyme products.
“This helps separate us from a big-box farm store. We don’t offer products that we don’t believe in. We use the products ourselves, we know how they work, and we believe in them,” Tyler said.
Although relatively new to the area, they are heavily involved with the agricultural community and giving back. Tyler is a member of the Pennington County 4-H Advisory Board and a former member of the Western Junior Livestock Show livestock committee. He and Mackenzie are also active on the Central States Fair Foundation and volunteer with the Central States Fair and Black Hills Stock Show.
“Tyler has been a good supporter of BioZyme as the manager (of D&M), and as the new owner, he wants to try to grow and expand the business. They are a smaller store with big opportunities,” said Area Sales Manager Steven Stone.
Thanks for believing in the products, Tyler and Mackenzie, and for giving back to your community!