Q.Took Down A Bradford Pear Tree Now Have Lots Of Suckers Growing In Circle Where Trunk Was
short of digging them up anything I can do to stop their growth?

Certified GKH Gardening Expert
Vinegar, and boiling water are two, very good, options when dealing with sucker trees reappearing.
Here are some articles that will help:
https://www.gardeningknowhow.com/plant-problems/weeds/boiling-water-and-plants.htm
https://www.gardeningknowhow.com/special/organic/homemade-pet-friendly-weed-killer.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/kill-zombie-tree-stump.htm