In the BBQ window...

This was a sign in the window of Dallas Barbecue. It looked pretty permanent, but what does it mean?

1. People not in the pharmaceutical industry cannot place catering orders?

2. People in the pharmaceutical industry are especially welcome, because we enjoy using your products?

3. People in the pharmaceutical industry are especially welcome, because the animals we kill and barbecue are full of your products?

4. People in the pharmaceutical industry were formerly not welcome, but we've changed our policy?

Any other ideas?