Same here! If the nails are too long it will take forever to shorten the nails. But once you get them down, I just smooth them down every other week.I have one, and it is great if the dog's nails are already relatively short and just need to be smoothed down. If the dog's nails are long and really need a trim, you should get regular clippers and clip them first, then smooth them down with the Pedipaws.
The Pedipaws alone takes way too long to actually significantly shorten a nail. It will get too hot due to all the friction, and the dog won't sit still for that long anyway.