Better than expected!
We have a big dog who is afraid of his shadow. He actually allowed (tolerated) us to polish our nails. The grinder is not loud, so it helps keep calm. His nails are thick and difficult to cut, so we can grind his nails into a round shape. Smoothing the nails also makes his run on our hardwood floors softer. If you grind them indoors, just put a paper towel under his paws to catch the dust... then pick it up and throw it away. simple.
Rating: 5 stars