To non-pet-owners this may seem like a silly application, but this is actually a very clever use of materials. It's got the simplicity of a student design project but the business brilliance of a shrewd marketer. The Ripple Rug is simply two pieces of carpet, one filled with random holes and with a baker's dozen of small Velcro strips. Here's what that yields:
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The company says the carpet is made from 100% recycled plastic bottles and can be washed with regular soap and water. At $40 a pop it seems a bit pricey vs. the BOM, but I suppose if your feline scratches this up rather than your couch then it's money well spent.