I have a 10 month old, around 90 pound Bernese Mountain Dog who has, understandably, a lot of coat and a major undercoat. I have tried many types of brushes and combs. This brush takes out extra old/dead fur and undercoat better than anything, even my go to undercoat rake. My boy hates to be brushed and this is no different. I’ve been doing shorter bursts with the size of the brush with less blades, then occasionally switching to the closer blade size. It’s miraculous how much fur I get off him,...