Wheat straw is the stalk left over after wheat grains are harvested. Rather than treating as waste, we are diverting material from the waste stream and using a reclaimed resource to make our durable, lightweight, and eco-friendly spray bottles. Each bottle is a little over 24oz, and the perfect size for our tablets. When you are ready to dispose of your bottle, you can bring it to your local recycling center and feel better about yourself and the planet. Hand Wash Only.