Hello,

To effectively treat a lawn in Michigan that has tiny black ants, the Michigan State University (MSU) Extension recommends the following methods:

For Ant Control:
Identify the Ants: Knowing the species is crucial as it determines their nesting sites, food preferences, and treatment methods.
Please get some images of the ants, then send all your images by e-mail to the MSU Plant & Pest Diagnostics Lab for a precise identification. The experts there can also provide you with the best treatment options. Their email is <personal data hidden> - Please include your name – The lab will let you know if they need a sample sent. FYI – The lab may also ask for additional images too.

Their website is at this link:

Plant & Pest Diagnostics (msu.edu)

Their Contact Information is at this link:

Contact Us - Plant & Pest Diagnostics (msu.edu)

This link will explain the details on submitting a sample to MSU Plant & Pest Diagnostics Lab:

Submit Samples - Plant & Pest Diagnostics (msu.edu)

Treat the Nest:The most effective way to get rid of ants is to find and treat the nest, as queens must be killed to eliminate a colony.

Baiting: Use fresh bait when ants are actively looking for food, usually in the late afternoon or evening.
Chemical Treatments: If necessary, spot-treat anthills with an insecticide, following the label instructions carefully.
Regular Monitoring and Maintenance: Are key to ensuring that the ants don’t return.

Here are some other resources concerning ants on the home lawn at the below links:
https://www.canr.msu.edu/ipm/diseases/turfgrass-ant

https://extension.umn.edu/insects-infest-homes/ants

https://extension.psu.edu/ants-in-home-lawns

https://ag.umass.edu/turf/fact-sheets/ants-in-lawns

Remember to always follow the safety guidelines when using any chemical treatments and consider consulting with a local lawn care specialist for personalized advice. Regular monitoring and maintenance are key to ensuring that the ants don’t return. Maintaining a healthy lawn and managing pests can be challenging, but with consistent care and the right techniques, you can achieve a lush, green lawn and an ant-free environment.

I hope this helps!