I was coming in to post with the same problem. Thumper is a maine coon mix. She has a lot of matts on her too but she has a major attitude issue and she's very strong. If she gets you into the "thumpie lock", you ain't getting out! lol. And she doesn't like it when we start messing with her too much, which is why she hasn't been brushed well enough to keep them off of her. We don't want to take her to a groomer because she has such an attitude that she may have to be put to sleep in order for them to do it and I don't want to take that chance because thumpie is old. A friend of ours had to do that and her cat almost didn't wake back up. I'm not willing to chance that. So I don't know what to do. Is there anything we can use to get them out ourselves that won't upset her too much?