When watching a squirrel or the birds go by, your dog or cat may be inclined to hop up on your windows. However, long nails, excitement, and jumping around can all lead to scratches, nicks, and other damage to the sill. Luckily, you can use a simple pool noodle hack, as demonstrated by House Digest, to help prevent pets from scratching windowsills. It doesn't look the best, but it'll keep those toes and claws from causing more trouble.