Yes, they make "special" pumice stones for sweaters but they are really the same thing you get from your hardware store.
I do not recommend using an old razor as it can snag and cut fibers. Special combs and electric defuzzers can work wonders but I like low tech- and I'm cheap.
Good sweater candidates for de-pilling:
100% acrylic and acrylic blend sweaters (Target cardigans are perfect!)
100% wool and wool blend
Not so good sweaters for using pumice:
fine woven fabrics, like silk
Always do a test patch!
Let's get started.
Hold one end of your sleeve to keep it in place, use the other to make small sweeps with the pumice stone. Brush away the little fur balls as they pile up. Keep going, double checking front, back, sides, and details (like ties and collars).
Love this sweater? You can get it in the shop this week!