Food Loophole

One of the rules in our house is no eating in the living room. Food has to stay in the dining room or the kitchen. To simplify this, we said food has to stay off the rug. Well, there is about 18" strip of hard wood bordering the enter living. So the kids regards this as a "safe" area. And, as long as their feet are on the "safe" area, they are okay, right?