The bait stations in the New York Carpenter Bee Control Kit should be placed where you notice carpenter ant activity.
It is important to avoid purposefully putting the bait in the middle of an ant trail or on to the ants themselves. This will make the ants avoid the bait and make the baiting ineffective. Instead, put the bait near ant activity or next to ant trails. To help keep ant bait fresh and off of surfaces we recommend placing the bait in the bait plate stations provided in the kit. Some examples of places where the bait can be placed are:
You should check the bait placements once a week and replenish as needed until ant activity has ceased.