Adds Durable Water Repellency and revitalizes breathability and insulation of your animal’s rugs and coats. Nikwax Rug Proof adds Durable Water Repellency (DWR) while maintaining breathability. It is quick and easy to apply in the washing machine, and its DWR develops on air drying. Nikwax Rug Proof™ has been specifically designed and optimized for breathable waterproof animal rugs and coats. It leaves a flexible water repellent treatment on individual fibers allowing moisture vapor to pass through, maintaining breathability, while protecting your animal from getting wet in the rain. Finally, washing machine application ensures that the treatment goes right through the rug or coat, treating seams, tapes and cords, as well as the fabric.