I got mine at Pet Supplies Plus last Sunday.so I had no waiting for mine. I used it on Monday on all 3 of mine and they all did wonderful! No sparks for us. I did watch the video from the web site and followed their instructions. I had no problems and it was so easy to do. I was a bit scared to try it at first and it took me a day to work up the nerves to do it
But I found it quite easy to use.