The new locations, in Monroe and Boyne City, add to the six Ace Hardware stores that launched the service earlier this year.
As with previous new locations, to encourage people to try inkjet refilling, the latest sites will be offering ink refills at no charge for the first week of introduction.
The Monroe store will hold the free ink refill week between 22 and 28 August, and the Boyne City site will have it from 23 to 29 August.
Frank Honold of Ink-O-Dem said: “We now have eight Ace Hardware locations in Michigan. Small businesses, students, moms – virtually anyone who uses a PC printer – can immediately reap the benefits of green living and the cost savings of inkjet refills.”