I have 2 dogs, a pomeranian and a Golden Retriever. Both have long fur....but my Golden sheds so bad I often wonder how he has any further left on his body. I've tried everything, deshedding shampoo, shaving him down, even vacuuming him. My brother recommended I try this comb.... I was super skeptical, but sick of vacuuming and brushing him every day. So I bought it. My first thought, omg look at how much hair are in the teeth of this, it's got be hurting him..... so I did another stroke. My boy layer down and rolled over.... I knew right then it wasn't hurting him and he actually liked it. I was so shocked how much fur was coming out with each stroke that I grabbed a ziplock bag and every time I took the fur off I put it in the bag. I filled a gallon freezer bag within 20 minutes. I was flabbergasted, I even posted a picture of the bag of fur on Facebook to show others. Now instead of brushing and vacuuming every day, I'm back to just once a week. Every Sunday I take my dog outside, spend 20 minutes brushing him, and we aren't covered in fur any more, and apparently he isn't either, but you'd never notice. Best brush ever.