The phrase "mill industry" refers to businesses or factories that specialize in the production or processing of materials, typically by using machinery like mills. Full definition
Across the country, cities and counties are taking a stand against the cruel puppy mill industry by adopting retail pet sale bans. (aldf.org)
Choose not to support the horrific puppy mill industry by saying no pet stores. (positively.com)
Not only does purchasing a pet fuel the puppy and kitten mill industries, but it contributes to the overwhelming problem of homeless pets. (onegreenplanet.org)