Understanding the type of rug that you own is critical so that you know which company offers the safest cleaning method for your rug. Proper identification is the key to protect the investment that you’ve made in a rug. Below are the basics of area rug identification. Start by inspecting both sides of your rug. The top side of the rug will reveal the type of fiber your rug was constructed with and the underside will reveal how the rug was made.