We Use Fresh Apple Wood And Low - Temperature Drying Technology To Preserve The Original Fiber Structure Of The Wood, Without Adding Chemical Preservatives Or Artificial Hardening Agents. The Natural Wood Material Has Moderate Hardness And Is Resistant To Biting And Wear, With A Slightly Frosted Surface And A Light Woody Fragrance That Can Attract Pets To Bite Actively. It Is Also Packaged In Food - Grade Cowhide Environmentally Friendly Paper Bags To Avoid Moisture And Mold. It Can Be Stored For More Than 12 Months In A Dry Environment.