I bought the PediPaws at Target and used it today. I have NEVER clipped or trimmed any of my dogs' nails...just never could bring myself to do it! But I thought I'd give this a try since it now costs $12 to get them done at the groomer, and that's just clipped - not filed. It was easy, although I didn't take much off of each nail, I'm sure - I just did it very lightly and only for 2 seconds or so on each one since it was our first time. But Olivia did great so I am sure I will get better with time. It was easy enough to use, a bit awkward to get the right positions, but I'm hoping that will improve too. No sparks, and the noise didn't seem to bother Olivia once she got used to it. So far so good!