I always find the easiest way is to pluck the hair gently! It's easier and more effective than brushing. You can usually tell which clumps are ready to come out cuz they stand out a bit differently from the rest. I just pluck until Cassie gets irritated with me, give her a treat and a head scratch, then leave her be for a while. Once or twice a day until it's over! Leave the chest/butt/feet/tummy up to them, though. I usually just drop the hair in one spot on the floor and wad it all up and throw it away when I'm done. Keeps her from ingesting a lot of it too re: hair impactions in the gut.