Seems that Grainger nation wide is now NO FIREARMS Allowed on their property.
Did you verify this information or are you staging a boycott based on a competitor counter person's comments?
I am waiting fro a reply from their corporate office
Verified by visiting the local store seeing the sign and by talking to the employee's at the counter.
You have concluded that this was a nationwide policy because you saw a sign in the local store window, and some guys in a competitor hardware store told you it was national? I'm finding it difficult to have confidence in your information.
As for disallowing guns on private property open to the public, IN OHIO the law is clear and the property owner only needs to post the no guns signs at the entrance to the building, and at the entrance to his PARKING LOT if he chooses. My employer does it, but most businesses dealing with the public walking in are not stupid enough to tell gunowners they need to park down the street if they want to do business there, which would assure them of losing the business, even if they were willing to disarm before entering. It carries penalty of law for non-compliance.