If a store isn't getting that much business at a mall, could the employees possibly advertise from there?

If a store isn't getting that much business at a mall, could the employees possibly advertise from there? It's a great store and I think a lot of people should know about it! Is it illegal to come up to people with perfume samples/testers from our store and hand it out to them? I haven't seen any other stores in the mall doing that, but I don't know if that's illegal. We have so many great products to offer and great quality also. I don't know how I could advertise our store without making it illegal.