Two of my cats suddenly had big wads of matted fur at the base of their tail on their back. Both have long fur. Dave does NOT like the scissors but she has learned it does not hurt. I cut as much of the mat as possible, from the top of the wad of fur. Then, I rub the fur that is between her skin and the bottom of the wad, I rub it between two fingers. This seems to loosen the fur wad from the fur between the two fingers. At the same time, with my other hand I am stroking and scratching and loving my kitty (this distracts her). Periodically I stop working on the fur wad and scratch her around the matted fur. Because the fur is matted up, they cannot scratch their backs there on anything, and my cats love to be scratched where the fur wad is. Anyhow, spend a few minutes doing this and some of the matted fur should come free. Once it is gone, I keep brushing her there so hopefully this mess will not reappear. One cat has gotten this twice, the other only once. If I have not explained this clearly, let me know and I will give it another try. And it seems to be painless to my cats.