Head to Amazon to get this highly-rated GoPets Dematting Comb with 2 Sided Professional Grooming Rake for Cats and Dogs for only $17.50, regularly $39.99. A double-sided pet comb has a different number of teeth on each side. Use the lower density side as a de-matting rake for stubborn mats and tangles. Then the higher density side as a detangler, de-shedding tool, or undercoat rake for faster results thinning and to control shedding.