The grooming shop I managed, we used tropiclean (not my favorite) and Nature's Specialty (which I really liked). I absolutely LOVE their Quicker Slicker for dematting. I would use it on thick coated dogs as a leave in conditioner...hydrosurging it in. When you would go to blow the dog out the clumps of hair just released and flew out...so nice
Deskunking, we tried all the ones on the market and the best was the homemade one of baking soda and hydrogen peroxide.