I have this amazing (to me) Great Pyreneese, "Ludwig". I made a mistake and used some kind of conditioner, thinking it was the "instant no-rinse" detangler type - but no - his fur (on the top of his back) is seriously matted. I would be embarassed to take him to the groomer at this point (and he does go about 3-4 times/year). I've used " Show Sheen" horse mane detangler, but haven't had a lot of luck. He's starting to get vegetative matter stuck in his fur to the skin, and it's hard to brush it out w/out making his skin sore. I have a "Furrminator" brush ($45!) and numerous other rakes/brushes etc, but at this point I'm desperate. Any ideas? Thanks.