Topographical maps are good as well. Sanborn Insurance Maps are really good as well, as they show industries on the line. Currently using them to layout for my model of the Rockland Branch.

https://preview.redd.it/08pkutu21cqa1.jpeg?width=720&format=pjpg&auto=webp&v=enabled&s=5c3e948f20f2b5221f3bb24f38ea493b4dd196b9

No matter what you put down to get one species, you will get collateral damage. These chemicals are not fool proof. That is why if you apply them commercially you need to be licensed and insured.

A lot of stuff on the market is broad spectrum...one is best to read up before they apply any insecticide to their lawn or anywhere on their property.

I start as soon as sections of the yard is free of snow and dries. Usually begin by raking and getting rid all the junk left from over the winter. I lime and fertilize when it will readily absorb into the soil. Crabgrass treatment is a preamergant (sp?) check on the bag for the timing. On the bug treatment, use caution as that stuff will kill most every insect known to mankind, including bees and other pollinators.

South Thomaston or better known as the 'Keag.

My favorite is Rock City Coffee in Rockland